{"id":42381,"date":"2025-09-01T19:02:32","date_gmt":"2025-09-01T13:32:32","guid":{"rendered":"https:\/\/mobisoftinfotech.com\/resources\/?p=42381"},"modified":"2025-10-15T15:04:33","modified_gmt":"2025-10-15T09:34:33","slug":"docker-image-vs-container-lifecycle","status":"publish","type":"post","link":"https:\/\/mobisoftinfotech.com\/resources\/blog\/devops\/docker-image-vs-container-lifecycle","title":{"rendered":"Docker Image vs Container: Understanding the Lifecycle &amp; Key Differences"},"content":{"rendered":"<p>Docker is an open-source platform that helps streamline work for developers. It gives teams a practical way to build, move, and run applications with containerization. Over time, it has become one of those tools you expect to find in any modern software project. Deployments go faster, and the whole system runs smoothly.<\/p>\n\n\n\n<p>The changes in how we build, ship, and manage applications since Docker came out are huge. Many beginners struggle to distinguish between a docker image and a docker container.<\/p>\n\n\n\n<p>Let\u2019s break that down together, talk through how these pieces connect, and take a look at what each one does during the container lifecycle when it\u2019s time to get your app running.<\/p>\n\n\n\n<p>If you\u2019re looking to streamline development and deployment pipelines, explore our<a href=\"https:\/\/mobisoftinfotech.com\/services\/devops?utm_source=blog_cta&amp;utm_campaign=docker-image-vs-container-lifecycle\"> devOps services for docker and CI\/CD<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"855\" height=\"268\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-architecture-images-containers.png\" alt=\"Docker architecture with images, containers, and lifecycle workflow\" class=\"wp-image-42382\" title=\"Docker Architecture: Images, Containers &amp; Lifecycle\"><\/noscript><img decoding=\"async\" width=\"855\" height=\"268\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20855%20268%22%3E%3C%2Fsvg%3E\" alt=\"Docker architecture with images, containers, and lifecycle workflow\" class=\"wp-image-42382 lazyload\" title=\"Docker Architecture: Images, Containers &amp; Lifecycle\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-architecture-images-containers.png\"><\/figure>\n\n\n\n<p class=\"has-text-align-center has-text-align-center\"><strong>Docker Images vs. Containers Flowchart<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Prerequisites&nbsp;<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading h3-list\"><strong>Basic Understanding of Virtualization<\/strong><\/h3>\n\n\n\n<p class=\"para-after-small-heading\">Picture virtualization as running several \u201ccomputers\u201d inside one physical machine. It\u2019s a helpful starting point. docker containers are similar, just lighter and less resource-hungry. Instead of spinning up full virtual machines, containers share parts of the machine\u2019s system to operate apps independently.<\/p>\n\n\n\n<h3 class=\"wp-block-heading h3-list\"><strong>Familiarity with Command-Line Interfaces<\/strong><\/h3>\n\n\n\n<p class=\"para-after-small-heading\">You\u2019ll need to use the terminal, a black window where you type Docker container commands. If you know how to switch folders or run a basic script, you\u2019re already set to move through the process more easily.<\/p>\n\n\n\n<h3 class=\"wp-block-heading h3-list\"><strong>Docker Installed<\/strong><\/h3>\n\n\n\n<p class=\"para-after-small-heading\">To follow along, docker needs to be set up on your device. It\u2019s available for Windows, Mac, and Linux. You can grab the installer from Docker\u2019s official site.<\/p>\n\n\n\n<h3 class=\"wp-block-heading h3-list\"><strong>Basic Knowledge of Containers<\/strong><\/h3>\n\n\n\n<p class=\"para-after-small-heading\">Knowing what a container is always helps. Think of it as a lightweight, self-contained package for apps. If you\u2019ve bumped into Kubernetes before, you\u2019re halfway there. Kubernetes exists to manage lots of containers across their lifecycle states.<\/p>\n\n\n\n<p>You can also<a href=\"https:\/\/mobisoftinfotech.com\/services\/hire-devops-consultants-developers?utm_source=blog&amp;utm_campaign=docker-image-vs-container-lifecycle\"> hire docker consultants for container strategy and lifecycle management<\/a><strong> <\/strong>to optimize your workflows<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/mobisoftinfotech.com\/services\/devops?utm_source=blog_cta&amp;utm_campaign=docker-image-vs-container-lifecycle\"><noscript><img decoding=\"async\" width=\"855\" height=\"363\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-devops-automation-deployments.png\" alt=\"DevOps automation for faster Docker container deployments\" class=\"wp-image-42415\" title=\"Unlock 10x Faster Deployments with DevOps Automatio\"><\/noscript><img decoding=\"async\" width=\"855\" height=\"363\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20855%20363%22%3E%3C%2Fsvg%3E\" alt=\"DevOps automation for faster Docker container deployments\" class=\"wp-image-42415 lazyload\" title=\"Unlock 10x Faster Deployments with DevOps Automatio\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-devops-automation-deployments.png\"><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What is a Docker Image?<\/strong><\/h2>\n\n\n\n<p>A docker image acts like a starter kit for software. It\u2019s a lightweight, standalone file that has everything an app needs: the application code, the required dependencies like libraries, runtime, system tools, frameworks, plus any custom settings packed inside.<\/p>\n\n\n\n<p>Once you build an image, it\u2019s read-only. You can\u2019t change it without building a new one. In practice, it\u2019s your template,something you \u201cstamp out\u201d docker containers from, over and over.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Key Characteristics of Docker Images<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Immutable:<\/strong> Once built, an image remains unchanged. Any modification requires creating a new image.<\/li>\n\n\n\n<li><strong>Portable:<\/strong> Can be shared and deployed across different environments.<\/li>\n\n\n\n<li><strong>Layered Structure:<\/strong> Built using a layered file system that optimizes storage and reuses common layers.<\/li>\n\n\n\n<li><strong>Versioned:<\/strong> Each image can be tagged with different versions (e.g., nginx:1.21, python:3.9).<\/li>\n\n\n\n<li><strong>Reusable:<\/strong> You can share and reuse images across different environments. They are typically stored in a Docker registry like Docker Hub, where you can pull public images or push your own.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What is a Docker Container?<\/strong><\/h2>\n\n\n\n<p>A Docker container comes to life when an image runs. Think of the image as a recipe, and the container as the chef working live in its own kitchen.<\/p>\n\n\n\n<p>A container starts as an image, but once it\u2019s running, it becomes a secluded space for your app. Each container runs independently. It happens when sharing the host\u2019s kernel; this keeps things light and quick.<\/p>\n\n\n\n<p>When you launch an app in a container, Docker creates a sandboxed environment where everything operates separately from the rest of your system. Containers are flexible, as they include a writable layer. So, data can change how your app runs and adapt on the fly throughout the container lifecycle.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Key Characteristics of Docker Containers<\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading h4-list\"><strong>Ephemeral by Default<\/strong><\/h4>\n\n\n\n<p class=\"para-after-small-heading\">Stop or delete a container, and you lose what\u2019s inside, but the image remains untouched.<\/p>\n\n\n\n<h4 class=\"wp-block-heading h4-list\"><strong>Isolated<\/strong><\/h4>\n\n\n\n<p class=\"para-after-small-heading\">Every container gets its own space to run, but you can let them talk to each other if that\u2019s needed.<\/p>\n\n\n\n<h4 class=\"wp-block-heading h4-list\"><strong>Lightweight<\/strong><\/h4>\n\n\n\n<p class=\"para-after-small-heading\">Since they share the host\u2019s kernel, containers use a lot less overhead than old-school virtual machines.<\/p>\n\n\n\n<h4 class=\"wp-block-heading h4-list\"><strong>Configurable<\/strong><\/h4>\n\n\n\n<p class=\"para-after-small-heading\">Change containers with different environment settings, adjust their networks, or attach storage; each container can be set up the way you need.<\/p>\n\n\n\n<p>Learn more about<a href=\"https:\/\/mobisoftinfotech.com\/resources\/blog\/docker-container-monitoring-prometheus-grafana?utm_source=blog&amp;utm_campaign=docker-image-vs-container-lifecycle\"> docker container monitoring with prometheus and grafana<\/a> for real-time insights<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Relationship Between Docker Images and Containers<\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading h4-list\"><strong>Docker Images as Templates<\/strong><\/h4>\n\n\n\n<p class=\"para-after-small-heading\">A Docker image is a read-only template that needs code, libraries, dependencies, and environment variables. It acts as a blueprint for creating containers.<\/p>\n\n\n\n<h4 class=\"wp-block-heading h4-list\"><strong>Containers as Live Instances<\/strong><\/h4>\n\n\n\n<p class=\"para-after-small-heading\">When you run an image with the docker run command, it creates a container. It runs the app from that image and maintains its own isolated environment.<\/p>\n\n\n\n<h4 class=\"wp-block-heading h4-list\"><strong>Multiple Containers from One Image<\/strong><\/h4>\n\n\n\n<p class=\"para-after-small-heading\">You can launch many containers from one image. Each container runs independently, even though they share the same base image. This runs identical apps with different configurations.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Additional Details<\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading h4-list\"><strong>Layered Architecture<\/strong><\/h4>\n\n\n\n<p class=\"para-after-small-heading\">Docker builds images in layers. Each layer records a change, such as installing a package or adding a file. These layers remain cached, so Docker can reuse them. This reduces storage use and speeds up image build and push\/pull processes. When a container starts, it adds a writable layer on top so changes can occur while it runs.<\/p>\n\n\n\n<h4 class=\"wp-block-heading h4-list\"><strong>Immutability of Images<\/strong><\/h4>\n\n\n\n<p class=\"para-after-small-heading\">Once you build an image, you cannot change it directly. To modify it, you need to create a new one. You can do this by adjusting a container and committing changes to the dockerfile before rebuilding.<\/p>\n\n\n\n<h4 class=\"wp-block-heading h4-list\"><strong>Reusability and Efficiency<\/strong><\/h4>\n\n\n\n<p class=\"para-after-small-heading\">Thanks to the layered structure, docker images are highly efficient. Shared layers minimize redundancy, speed up deployment, and support multiple containers across different lifecycle stages.<\/p>\n\n\n\n<p>For a deeper dive into automation, explore our detailed guide on<a href=\"https:\/\/mobisoftinfotech.com\/resources\/blog\/ci-cd-with-docker-and-aws?utm_source=blog&amp;utm_campaign=docker-image-vs-container-lifecycle\"> CI\/CD pipeline with docker and aws<\/a><strong>.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Docker Installation Steps for Containers and Images<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading h3-list\"><strong>Step 1: Update Your System First<\/strong><\/h3>\n\n\n\n<p class=\"para-after-small-heading\">Make sure your package index is up to date. Open your terminal and run<\/p>\n\n\n<pre class=\"wp-block-code para-after-small-heading\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">sudo apt-<span class=\"hljs-keyword\">get<\/span> update<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h3 class=\"wp-block-heading h3-list\"><strong>Step 2: Install Required Packages<\/strong><\/h3>\n\n\n\n<p class=\"para-after-small-heading\">Docker installation requires some dependencies like ca-certificates, curl, and GnuPG. Install them with<\/p>\n\n\n<pre class=\"wp-block-code para-after-small-heading\" aria-describedby=\"shcb-language-2\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">sudo apt-<span class=\"hljs-keyword\">get<\/span> install -y ca-certificates curl gnupg<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-2\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h3 class=\"wp-block-heading h3-list\"><strong>Step 3: Create a Keyrings Directory<\/strong><\/h3>\n\n\n\n<p class=\"para-after-small-heading\">Docker recommends storing its GPG key in a dedicated keyring directory. Let\u2019s create it<\/p>\n\n\n<pre class=\"wp-block-code para-after-small-heading\"><span><code class=\"hljs\">sudo install -m 0755 -d \/etc\/apt\/keyrings<\/code><\/span><\/pre>\n\n\n<h3 class=\"wp-block-heading h3-list\"><strong>Step 4: Add Docker\u2019s Official GPG Key<\/strong><\/h3>\n\n\n\n<p class=\"para-after-small-heading\">Next, download and save Docker\u2019s official GPG key<\/p>\n\n\n<pre class=\"wp-block-code para-after-small-heading\" aria-describedby=\"shcb-language-3\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">curl -fsSL https:<span class=\"hljs-comment\">\/\/download.docker.com\/linux\/ubuntu\/gpg | \\<\/span><\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-3\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n<pre class=\"wp-block-code para-after-small-heading\"><span><code class=\"hljs\">sudo gpg --dearmor -o \/etc\/apt\/keyrings\/docker.gpg<\/code><\/span><\/pre>\n\n\n<p class=\"para-after-small-heading\">This step ensures the packages you install stay authentic and safe.<\/p>\n\n\n\n<h3 class=\"wp-block-heading h3-list\"><strong>Step 5: Set Permissions on the GPG Key<\/strong><\/h3>\n\n\n\n<p class=\"para-after-small-heading\">Make the key readable by the apt system:<\/p>\n\n\n<pre class=\"wp-block-code para-after-small-heading\"><span><code class=\"hljs\">Sudo chmod a+r \/etc\/apt\/keyrings\/docker.gpg<\/code><\/span><\/pre>\n\n\n<h3 class=\"wp-block-heading h3-list\"><strong>Step 6: Update Your Package Index Again<\/strong><\/h3>\n\n\n\n<p class=\"para-after-small-heading\">After adding the Docker repository, update the package index again:<\/p>\n\n\n<pre class=\"wp-block-code para-after-small-heading\" aria-describedby=\"shcb-language-4\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">sudo apt-<span class=\"hljs-keyword\">get<\/span> update<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-4\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h3 class=\"wp-block-heading h3-list\"><strong>Step 7: Install Docker Engine &amp; Plugins<\/strong><\/h3>\n\n\n<pre class=\"wp-block-code para-after-small-heading\" aria-describedby=\"shcb-language-5\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\"> sudo apt-<span class=\"hljs-keyword\">get<\/span> install -y \\\n    docker-ce \\\n    docker-ce-cli \\\n    containerd.io \\\n    docker-buildx-plugin \\\n    docker-compose-plugin<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-5\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p class=\"para-after-small-heading\">This installs everything you need to build docker images and manage container lifecycles.<\/p>\n\n\n\n<h3 class=\"wp-block-heading h3-list\"><strong>Step 8: Add Your User to the Docker Group<\/strong><\/h3>\n\n\n\n<p class=\"para-after-small-heading\">Docker requires sudo for commands by default. If you want to run Docker as a regular user, add your user to the Docker group.<\/p>\n\n\n<pre class=\"wp-block-code para-after-small-heading\"><span><code class=\"hljs\">sudo usermod -aG docker ubuntu<\/code><\/span><\/pre>\n\n\n<p class=\"para-after-small-heading\"><strong>Important:<\/strong> You\u2019ll need to log out and log back in for the new group membership to take effect!<\/p>\n\n\n\n<h3 class=\"wp-block-heading h3-list\"><strong>Step 9: Fix Common Docker Installation Issues<\/strong><\/h3>\n\n\n\n<p class=\"para-after-small-heading\">If you find any error while installing it, there should be sources.list.d missing, so you want to create that file using the below command&nbsp;<\/p>\n\n\n<pre class=\"wp-block-code para-after-small-heading\" aria-describedby=\"shcb-language-6\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php\">sudo mkdir \/etc\/apt\/sources.<span class=\"hljs-keyword\">list<\/span>.d<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-6\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n<pre class=\"wp-block-code para-after-small-heading\" aria-describedby=\"shcb-language-7\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">sudo chmod <span class=\"hljs-number\">666<\/span> \/<span class=\"hljs-keyword\">var<\/span>\/run\/docker.sock<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-7\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h3 class=\"wp-block-heading h3-list\"><strong>Step 10: Test Your Docker Installation and Running Containers<\/strong><\/h3>\n\n\n\n<p class=\"para-after-small-heading\">Finally, test that Docker is working:<\/p>\n\n\n<pre class=\"wp-block-code para-after-small-heading\"><span><code class=\"hljs\">docker ps<\/code><\/span><\/pre>\n\n\n<p class=\"para-after-small-heading\">If you see an empty list of containers without errors, congratulations. Docker is installed and ready to use!&nbsp; To strengthen your DevOps security posture, check out how<a href=\"https:\/\/mobisoftinfotech.com\/resources\/blog\/devsecops-mitigating-vulnerabilities-sonarqube-owasp?utm_source=blog&amp;utm_campaign=docker-image-vs-container-lifecycle\"> DevSecOps with SonarQube and OWASP<\/a> helps mitigate risks early.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Simple Example: Docker Image Build and Container Lifecycle<\/strong><\/h2>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Step 1: Pull the Docker Image<\/strong><\/h4>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-8\" data-shcb-language-name=\"CSS\" data-shcb-language-slug=\"css\"><span><code class=\"hljs language-css\"><span class=\"hljs-selector-tag\">docker<\/span> <span class=\"hljs-selector-tag\">pull<\/span> <span class=\"hljs-selector-tag\">python<\/span><span class=\"hljs-selector-pseudo\">:3.11<\/span><\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-8\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">CSS<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">css<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h4 class=\"wp-block-heading\"><strong>Step 2: Run a Container from an Image<\/strong><\/h4>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-9\" data-shcb-language-name=\"CSS\" data-shcb-language-slug=\"css\"><span><code class=\"hljs language-css\"><span class=\"hljs-selector-tag\">docker<\/span> <span class=\"hljs-selector-tag\">run<\/span> <span class=\"hljs-selector-tag\">python<\/span><span class=\"hljs-selector-pseudo\">:3.11<\/span> <span class=\"hljs-selector-tag\">python<\/span> <span class=\"hljs-selector-tag\">--version<\/span><\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-9\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">CSS<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">css<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-10\" data-shcb-language-name=\"CSS\" data-shcb-language-slug=\"css\"><span><code class=\"hljs language-css\"><span class=\"hljs-selector-tag\">Python<\/span> 3<span class=\"hljs-selector-class\">.11<\/span><span class=\"hljs-selector-class\">.x<\/span><\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-10\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">CSS<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">css<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h2 class=\"wp-block-heading\"><strong>Docker Compose Example with PostgreSQL<\/strong><\/h2>\n\n\n\n<p>Create a YAML file named docker-compose-postgresql-16.yml.<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-11\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php\">version: <span class=\"hljs-string\">'3.8'<\/span>\nservices:\n  db:\n    image: postgres:<span class=\"hljs-number\">16<\/span>\n    restart: always\n    environment:\n      POSTGRES_USER: postgres\n      POSTGRES_PASSWORD: mobisoft\n      POSTGRES_DB: your_database_name\n    ports:\n      - <span class=\"hljs-string\">'5433:5432'<\/span>\n    volumes:\n      - $HOME\/myapp\/postgres_16:\/<span class=\"hljs-keyword\">var<\/span>\/lib\/postgresql\/data\n    deploy:\n      resources:\n        limits:\n          memory: <span class=\"hljs-number\">512<\/span>M<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-11\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h4 class=\"wp-block-heading h4-list\"><strong>Step 1:&nbsp; Docker Compose File for PostgreSQL Lifecycle Management<\/strong><\/h4>\n\n\n<pre class=\"wp-block-code para-after-small-heading\" aria-describedby=\"shcb-language-12\" data-shcb-language-name=\"CSS\" data-shcb-language-slug=\"css\"><span><code class=\"hljs language-css\"><span class=\"hljs-selector-tag\">docker<\/span> <span class=\"hljs-selector-tag\">compose<\/span> <span class=\"hljs-selector-tag\">-f<\/span> <span class=\"hljs-selector-tag\">docker-compose-postgresql-16<\/span><span class=\"hljs-selector-class\">.yml<\/span>&nbsp; <span class=\"hljs-selector-tag\">--compatibility<\/span> <span class=\"hljs-selector-tag\">up<\/span>&nbsp;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-12\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">CSS<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">css<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"855\" height=\"261\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-compose-postgresql-lifecycle.png\" alt=\"Docker Compose file for PostgreSQL container lifecycle management\" class=\"wp-image-42398\" title=\"Docker Compose File for PostgreSQL Lifecycle\"><\/noscript><img decoding=\"async\" width=\"855\" height=\"261\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20855%20261%22%3E%3C%2Fsvg%3E\" alt=\"Docker Compose file for PostgreSQL container lifecycle management\" class=\"wp-image-42398 lazyload\" title=\"Docker Compose File for PostgreSQL Lifecycle\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-compose-postgresql-lifecycle.png\"><\/figure>\n\n\n\n<h4 class=\"wp-block-heading h4-list\"><strong>Step 2: Check Docker Images and Running Containers<\/strong><\/h4>\n\n\n<pre class=\"wp-block-code para-after-small-heading\"><span><code class=\"hljs\">docker images<\/code><\/span><\/pre>\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"855\" height=\"113\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/check-docker-images-containers.png\" alt=\"Check Docker images and containers with lifecycle states\" class=\"wp-image-42399\" title=\"Check Docker Images and Running Containers\"><\/noscript><img decoding=\"async\" width=\"855\" height=\"113\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20855%20113%22%3E%3C%2Fsvg%3E\" alt=\"Check Docker images and containers with lifecycle states\" class=\"wp-image-42399 lazyload\" title=\"Check Docker Images and Running Containers\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/check-docker-images-containers.png\"><\/figure>\n\n\n\n<h4 class=\"wp-block-heading h4-list\"><strong>Step 3: Check Docker Images and Running Containers<\/strong><\/h4>\n\n\n<pre class=\"wp-block-code para-after-small-heading\"><span><code class=\"hljs\">docker ps<\/code><\/span><\/pre>\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"855\" height=\"122\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-images-containers-status.png\" alt=\"Docker CLI to verify images and container lifecycle status\" class=\"wp-image-42400\" title=\"Docker Images and Running Containers Status\"><\/noscript><img decoding=\"async\" width=\"855\" height=\"122\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20855%20122%22%3E%3C%2Fsvg%3E\" alt=\"Docker CLI to verify images and container lifecycle status\" class=\"wp-image-42400 lazyload\" title=\"Docker Images and Running Containers Status\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-images-containers-status.png\"><\/figure>\n\n\n\n<h4 class=\"wp-block-heading h4-list\"><strong>Step 4: Access a Running PostgreSQL Container<\/strong><\/h4>\n\n\n<pre class=\"wp-block-code para-after-small-heading\"><span><code class=\"hljs\">docker exec -it docker_postgres_1 psql -U postgres&nbsp;<\/code><\/span><\/pre>\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"855\" height=\"113\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/postgresql-docker-container-access.png\" alt=\"Access PostgreSQL running inside a Docker container\" class=\"wp-image-42401\" title=\"Access PostgreSQL Docker Container\"><\/noscript><img decoding=\"async\" width=\"855\" height=\"113\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20855%20113%22%3E%3C%2Fsvg%3E\" alt=\"Access PostgreSQL running inside a Docker container\" class=\"wp-image-42401 lazyload\" title=\"Access PostgreSQL Docker Container\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/postgresql-docker-container-access.png\"><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Postgres Service file<\/strong><\/h3>\n\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">&#091;Unit]\nDescription=postgresqlService\nRequires=postgresql16.service\nAfter=docker.service\n&#091;Service]\nRestart=always\nUser=phapalnavnath\nGroup=docker<\/code><\/span><\/pre>\n\n\n<p># Shutdown container (if running) when unit is stopped<\/p>\n\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">ExecStartPre=docker compose -f \/home\/phapalnavnath\/docker\/docker-compose-postgresql-16.yml --compatibility down -v<\/code><\/span><\/pre>\n\n\n<p># Start container when unit is started<\/p>\n\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">ExecStart=docker compose -f \/home\/phapalnavnath\/docker\/docker-compose-postgresql-16.yml --compatibility up<\/code><\/span><\/pre>\n\n\n<p># Stop container when unit is stopped<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-13\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">ExecStop=docker compose -f \/home\/phapalnavnath\/docker<span class=\"hljs-comment\">\/\/docker-compose-mysql8.yml --compatibility down -v<\/span>\n&#091;Install]\nWantedBy=multi-user.target<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-13\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"855\" height=\"423\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/postgres-service-docker-container.png\" alt=\"PostgreSQL service file for Docker container lifecycle setup\" class=\"wp-image-42408\" title=\"Postgres Service File for Docker Containers\"><\/noscript><img decoding=\"async\" width=\"855\" height=\"423\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20855%20423%22%3E%3C%2Fsvg%3E\" alt=\"PostgreSQL service file for Docker container lifecycle setup\" class=\"wp-image-42408 lazyload\" title=\"Postgres Service File for Docker Containers\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/postgres-service-docker-container.png\"><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"855\" height=\"209\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-container-symlink-setup.png\" alt=\" Create symlink for Docker container lifecycle configuration\" class=\"wp-image-42422\" title=\"Create a Symlink for Docker Configuration\"><\/noscript><img decoding=\"async\" width=\"855\" height=\"209\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20855%20209%22%3E%3C%2Fsvg%3E\" alt=\" Create symlink for Docker container lifecycle configuration\" class=\"wp-image-42422 lazyload\" title=\"Create a Symlink for Docker Configuration\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-container-symlink-setup.png\"><\/figure>\n\n\n\n<p># Create a symlink if the file was originally outside \/etc\/systemd\/system<\/p>\n\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">sudo ln -s \/home\/phapalnavnath\/docker\/postgresql16.service<\/code><\/span><\/pre>\n\n\n<p># Reload systemd so it recognizes the new service<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-14\" data-shcb-language-name=\"CSS\" data-shcb-language-slug=\"css\"><span><code class=\"hljs language-css\"><span class=\"hljs-selector-tag\">sudo<\/span> <span class=\"hljs-selector-tag\">systemctl<\/span> <span class=\"hljs-selector-tag\">enable<\/span> <span class=\"hljs-selector-tag\">postgresql16<\/span><span class=\"hljs-selector-class\">.service<\/span><\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-14\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">CSS<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">css<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p># Enable the service to auto-start at boot<\/p>\n\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">sudo systemctl daemon-reload<\/code><\/span><\/pre>\n\n\n<p># Start the service now<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-15\" data-shcb-language-name=\"CSS\" data-shcb-language-slug=\"css\"><span><code class=\"hljs language-css\"><span class=\"hljs-selector-tag\">sudo<\/span> <span class=\"hljs-selector-tag\">systemctl<\/span> <span class=\"hljs-selector-tag\">status<\/span> <span class=\"hljs-selector-tag\">postgresql16<\/span><span class=\"hljs-selector-class\">.service<\/span><\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-15\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">CSS<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">css<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">docker ps<\/code><\/span><\/pre>\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">docker exec -it docker_db_1 psql -U postgres&nbsp;<\/code><\/span><\/pre>\n\n\n<h2 class=\"wp-block-heading\"><strong>Benefits<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Auto-recovery: <\/strong>Systemd restarts PostgreSQL if it crashes.<\/li>\n\n\n\n<li><strong>Boot time: <\/strong>The system starts it automatically when the machine boots.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Docker Compose Example with MySQL Containers<\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Step 1: Create a MySQL Docker Compose File<\/strong><\/h4>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-16\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">version: <span class=\"hljs-string\">'3.8'<\/span>\n<span class=\"hljs-attr\">services<\/span>:\n  mysql:\n    image: mysql:<span class=\"hljs-number\">8.0<\/span>\n    <span class=\"hljs-attr\">container_name<\/span>: mysql-db\n    <span class=\"hljs-attr\">restart<\/span>: always\n    <span class=\"hljs-attr\">environment<\/span>:\n      MYSQL_ROOT_PASSWORD: mobisoft\n      <span class=\"hljs-attr\">MYSQL_DATABASE<\/span>: mydatabase\n      <span class=\"hljs-attr\">MYSQL_USER<\/span>: myuser\n      <span class=\"hljs-attr\">MYSQL_PASSWORD<\/span>: userpassword\n    <span class=\"hljs-attr\">ports<\/span>:\n      - <span class=\"hljs-string\">'3307:3306'<\/span>\n  \n  <span class=\"hljs-attr\">volumes<\/span>:\n      - mysqldata:<span class=\"hljs-regexp\">\/var\/<\/span>lib\/mysql\n    <span class=\"hljs-attr\">deploy<\/span>:\n      resources:\n        limits:\n          memory: <span class=\"hljs-number\">512<\/span>M\n<span class=\"hljs-attr\">volumes<\/span>:\n  mysqldata:<span class=\"hljs-regexp\">\/var\/<\/span>lib\/mysql<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-16\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h4 class=\"wp-block-heading\"><strong>Step 2: Start the containers<\/strong><\/h4>\n\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"855\" height=\"350\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/start-docker-containers-lifecycle.png\" alt=\"Start Docker containers for lifecycle management\" class=\"wp-image-42424\" title=\"Starting Docker Containers for Lifecycle Workflow\"><\/noscript><img decoding=\"async\" width=\"855\" height=\"350\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20855%20350%22%3E%3C%2Fsvg%3E\" alt=\"Start Docker containers for lifecycle management\" class=\"wp-image-42424 lazyload\" title=\"Starting Docker Containers for Lifecycle Workflow\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/start-docker-containers-lifecycle.png\"><\/figure>\n\n\n\n<p><\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-17\" data-shcb-language-name=\"CSS\" data-shcb-language-slug=\"css\"><span><code class=\"hljs language-css\"><span class=\"hljs-selector-tag\">docker<\/span> <span class=\"hljs-selector-tag\">compose<\/span> <span class=\"hljs-selector-tag\">-f<\/span> <span class=\"hljs-selector-tag\">docker-compose-mysql<\/span><span class=\"hljs-selector-class\">.yml<\/span> <span class=\"hljs-selector-tag\">--compatibility<\/span> <span class=\"hljs-selector-tag\">up<\/span>&nbsp;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-17\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">CSS<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">css<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h4 class=\"wp-block-heading\"><strong>Step 3: Docker images<\/strong><\/h4>\n\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"855\" height=\"60\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-images-lifecycle.png\" alt=\"Docker images for container lifecycle and workflow\" class=\"wp-image-42405\" title=\"Docker Images for Lifecycle Management\"><\/noscript><img decoding=\"async\" width=\"855\" height=\"60\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20855%2060%22%3E%3C%2Fsvg%3E\" alt=\"Docker images for container lifecycle and workflow\" class=\"wp-image-42405 lazyload\" title=\"Docker Images for Lifecycle Management\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-images-lifecycle.png\"><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Step 4: Check running containers<\/strong><\/h4>\n\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">docker ps<\/code><\/span><\/pre>\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"855\" height=\"76\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-running-containers-status.png\" alt=\"Check running Docker containers and lifecycle states\" class=\"wp-image-42406\" title=\"Docker Running Containers Status\"><\/noscript><img decoding=\"async\" width=\"855\" height=\"76\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20855%2076%22%3E%3C%2Fsvg%3E\" alt=\"Check running Docker containers and lifecycle states\" class=\"wp-image-42406 lazyload\" title=\"Docker Running Containers Status\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-running-containers-status.png\"><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Step 5:&nbsp; Access the MySQL client running inside a Docker container.<\/strong><\/h4>\n\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">docker exec -it 677f4fa66b86 mysql -u root -p<\/code><\/span><\/pre>\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"855\" height=\"223\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/mysql-client-docker-container.png\" alt=\"Access MySQL client inside Docker container lifecycle\" class=\"wp-image-42407\" title=\"Access MySQL Client in Docker Container\"><\/noscript><img decoding=\"async\" width=\"855\" height=\"223\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20855%20223%22%3E%3C%2Fsvg%3E\" alt=\"Access MySQL client inside Docker container lifecycle\" class=\"wp-image-42407 lazyload\" title=\"Access MySQL Client in Docker Container\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/mysql-client-docker-container.png\"><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>MySQL Service file<\/strong><\/h2>\n\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">&#091;Unit]\nDescription=mysqlService\nRequires=mysql.service\nAfter=docker.service\n&#091;Service]\nRestart=always\nUser=phapalnavnath\nGroup=docker<\/code><\/span><\/pre>\n\n\n<p># Shutdown container (if running) when unit is stopped<\/p>\n\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">ExecStartPre=docker compose -f \/home\/phapalnavnath\/docker\/mysql\/docker-compose-mysql8.yml --compatibility down -v<\/code><\/span><\/pre>\n\n\n<p># Start container when unit is started<\/p>\n\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">ExecStart=docker compose -f \/home\/phapalnavnath\/docker\/docker-compose-mysql8.yml --compatibility up<\/code><\/span><\/pre>\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"855\" height=\"423\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/postgres-service-docker-container.png\" alt=\"PostgreSQL service file for Docker container lifecycle setup\" class=\"wp-image-42408\" title=\"Postgres Service File for Docker Containers\"><\/noscript><img decoding=\"async\" width=\"855\" height=\"423\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20855%20423%22%3E%3C%2Fsvg%3E\" alt=\"PostgreSQL service file for Docker container lifecycle setup\" class=\"wp-image-42408 lazyload\" title=\"Postgres Service File for Docker Containers\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/postgres-service-docker-container.png\"><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"855\" height=\"330\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-start-container-unit.png\" alt=\"Start Docker container when service unit is triggered\" class=\"wp-image-42409\" title=\" Docker Start Container with Service Unit\"><\/noscript><img decoding=\"async\" width=\"855\" height=\"330\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20855%20330%22%3E%3C%2Fsvg%3E\" alt=\"Start Docker container when service unit is triggered\" class=\"wp-image-42409 lazyload\" title=\" Docker Start Container with Service Unit\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-start-container-unit.png\"><\/figure>\n\n\n\n<p># Stop container when unit is stopped<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-18\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">ExecStop=docker compose -f \/home\/phapalnavnath\/docker<span class=\"hljs-comment\">\/\/docker-compose-mysql8.yml --compatibility down -v<\/span>\n&#091;Install]\nWantedBy=multi-user.target<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-18\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">sudo ln -s \/home\/phapalnavnath\/docker\/mysql.service\n\nsudo systemctl enable mysql.service\n\nsudo systemctl daemon-reload\n\nsudo systemctl status mysql.service\n\ndocker ps\n\ndocker exec -it docker_mysql_1 mysql -u root -p<\/code><\/span><\/pre>\n\n\n<h2 class=\"wp-block-heading\"><strong>Benefits<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Auto-recovery<\/strong>: If PostgreSQL crashes, systemd will restart it<\/li>\n\n\n\n<li><strong>Boot time<\/strong>: Starts automatically when the machine boots<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Docker Compose Example: Running a Multi-Container Application<\/strong><\/h2>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Step 1: Create a Docker Compose File for Multiple Services<\/strong><\/h4>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-19\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">version: <span class=\"hljs-string\">\"2.1\"<\/span>\n\n<span class=\"hljs-attr\">services<\/span>:\n  yelb-ui:\n    image: mreferre\/yelb-ui:<span class=\"hljs-number\">0.10<\/span>\n    <span class=\"hljs-attr\">depends_on<\/span>:\n      - yelb-appserver\n    <span class=\"hljs-attr\">ports<\/span>:\n      - <span class=\"hljs-string\">\"8080:80\"<\/span>\n    <span class=\"hljs-attr\">environment<\/span>:\n      - UI_ENV=test\n    <span class=\"hljs-attr\">mem_limit<\/span>: <span class=\"hljs-number\">512<\/span>m\n\n  yelb-appserver:\n    image: mreferre\/yelb-appserver:<span class=\"hljs-number\">0.7<\/span>\n    <span class=\"hljs-attr\">depends_on<\/span>:\n      - redis-server\n      - yelb-db\n    <span class=\"hljs-attr\">ports<\/span>:\n      - <span class=\"hljs-string\">\"4567:4567\"<\/span>\n    <span class=\"hljs-attr\">environment<\/span>:\n      - RACK_ENV=test\n    <span class=\"hljs-attr\">mem_limit<\/span>: <span class=\"hljs-number\">512<\/span>m\n\n \n redis-server:\n    image: redis:<span class=\"hljs-number\">4.0<\/span><span class=\"hljs-number\">.2<\/span>\n    <span class=\"hljs-attr\">ports<\/span>:\n      - <span class=\"hljs-string\">\"6379:6379\"<\/span>\n    <span class=\"hljs-attr\">mem_limit<\/span>: <span class=\"hljs-number\">512<\/span>m\n\n  yelb-db:\n    image: mreferre\/yelb-db:<span class=\"hljs-number\">0.6<\/span>\n    <span class=\"hljs-attr\">ports<\/span>:\n      - <span class=\"hljs-string\">\"5432:5432\"<\/span>\n    <span class=\"hljs-attr\">mem_limit<\/span>: <span class=\"hljs-number\">512<\/span>m\n<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-19\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h4 class=\"wp-block-heading\"><strong>Step 2: Start All Containers Together<\/strong><\/h4>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-20\" data-shcb-language-name=\"CSS\" data-shcb-language-slug=\"css\"><span><code class=\"hljs language-css\"><span class=\"hljs-selector-tag\">docker<\/span> <span class=\"hljs-selector-tag\">compose<\/span> <span class=\"hljs-selector-tag\">-f<\/span> <span class=\"hljs-selector-tag\">docker-compose<\/span><span class=\"hljs-selector-class\">.yml<\/span> <span class=\"hljs-selector-tag\">--compatibility<\/span> <span class=\"hljs-selector-tag\">up<\/span>&nbsp;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-20\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">CSS<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">css<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"855\" height=\"177\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/start-multiple-docker-containers.png\" alt=\"Start multiple Docker containers in lifecycle workflow\n\" class=\"wp-image-42404\" title=\"Start Multiple Containers in Docker Lifecycle\"><\/noscript><img decoding=\"async\" width=\"855\" height=\"177\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20855%20177%22%3E%3C%2Fsvg%3E\" alt=\"Start multiple Docker containers in lifecycle workflow\n\" class=\"wp-image-42404 lazyload\" title=\"Start Multiple Containers in Docker Lifecycle\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/start-multiple-docker-containers.png\"><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Step&nbsp; 3: Check Running Containers and Lifecycle States<\/strong><\/h4>\n\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">docker ps<\/code><\/span><\/pre>\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"855\" height=\"153\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-container-lifecycle-states.png\" alt=\"Check Docker container lifecycle states and transitions\" class=\"wp-image-42403\" title=\"Docker Container Lifecycle States\"><\/noscript><img decoding=\"async\" width=\"855\" height=\"153\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20855%20153%22%3E%3C%2Fsvg%3E\" alt=\"Check Docker container lifecycle states and transitions\" class=\"wp-image-42403 lazyload\" title=\"Docker Container Lifecycle States\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-container-lifecycle-states.png\"><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Step 4: Access the Application<\/strong><\/h4>\n\n\n\n<p><a href=\"http:\/\/localhost:8080\">http:\/\/localhost:8080<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"800\" height=\"395\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-access-application.jpg\" alt=\"Access application running inside Docker container lifecycle\" class=\"wp-image-42413\" title=\"Access Application in Docker Container\"><\/noscript><img decoding=\"async\" width=\"800\" height=\"395\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20800%20395%22%3E%3C%2Fsvg%3E\" alt=\"Access application running inside Docker container lifecycle\" class=\"wp-image-42413 lazyload\" title=\"Access Application in Docker Container\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-access-application.jpg\"><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Key Differences Between Docker Images and Containers<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"855\" height=\"1084\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-image-vs-container-differences.png\" alt=\"Key differences between Docker images and container lifecycle\n\" class=\"wp-image-42383\" title=\"Docker Image vs Container: Key Differences\"><\/noscript><img decoding=\"async\" width=\"855\" height=\"1084\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20855%201084%22%3E%3C%2Fsvg%3E\" alt=\"Key differences between Docker images and container lifecycle\n\" class=\"wp-image-42383 lazyload\" title=\"Docker Image vs Container: Key Differences\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-image-vs-container-differences.png\"><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Conclusion<\/strong><\/h2>\n\n\n\n<p>Understanding the difference between Docker images and containers is crucial for modern development. Think of an image as the recipe and the container as the dish. Images define the blueprint, while containers represent the runtime state and lifecycle.<\/p>\n\n\n\n<p>Using both together lets you build scalable applications, manage container lifecycle states, and optimize deployments across environments. For CTOs, CROs, and engineering leaders, mastering this distinction ensures smoother DevOps pipelines, better scalability, and efficient resource management. To scale your engineering capabilities, you can<a href=\"https:\/\/mobisoftinfotech.com\/services\/hire-devops-engineers?utm_source=chatgpt.com\"> hire devOps engineers for docker and cloud automation<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/mobisoftinfotech.com\/contact-us?utm_source=blog&amp;utm_campaign=docker-image-vs-container-lifecycle\"><noscript><img decoding=\"async\" width=\"855\" height=\"363\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-container-lifecycle-build-tech.png\" alt=\"Build scalable apps with Docker container lifecycle management\" class=\"wp-image-42416\" title=\"Build Your Next Big Idea with the Right Docker Tech Stack\"><\/noscript><img decoding=\"async\" width=\"855\" height=\"363\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20855%20363%22%3E%3C%2Fsvg%3E\" alt=\"Build scalable apps with Docker container lifecycle management\" class=\"wp-image-42416 lazyload\" title=\"Build Your Next Big Idea with the Right Docker Tech Stack\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-container-lifecycle-build-tech.png\"><\/a><\/figure>\n\n\n<div class=\"modern-author-card\">\n    <div class=\"author-card-content\">\n        <div class=\"author-info-section\">\n            <div class=\"author-avatar\">\n                <noscript><img decoding=\"async\" src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/Navnath.jpg\" alt=\"Navnath Phapal\"><\/noscript><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"Navnath Phapal\" data-src=\"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/Navnath.jpg\" class=\" lazyload\">\n            <\/div>\n            <div class=\"author-details\">\n                <h3 class=\"author-name\">Navnath Phapal<\/h3>\n                <p class=\"author-title\">Infrastructure Engineer<\/p>\n                <a href=\"javascript:void(0);\" class=\"read-more-link read-more-btn\" onclick=\"toggleAuthorBio(this); return false;\">Read more <noscript><img decoding=\"async\" src=\"\/assets\/images\/blog\/Vector.png\" alt=\"expand\" class=\"read-more-arrow down-arrow\"><\/noscript><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"expand\" class=\"read-more-arrow down-arrow lazyload\" data-src=\"\/assets\/images\/blog\/Vector.png\"><\/a>\n                <div class=\"author-bio-expanded\">\n                    <p>Navnath Phapal is an Infrastructure Engineer at <a href=\"https:\/\/mobisoftinfotech.com\/\">Mobisoft Infotech<\/a>, bringing over 6 years of experience in designing and managing scalable, automated infrastructure solutions. Passionate about continuous learning and emerging technologies, he focuses on optimizing systems and streamlining operations through automation. Navnath's curiosity and strong engineering foundation drive his commitment to building resilient, future-ready infrastructure in today's fast-paced tech landscape.<\/p>\n                    <div class=\"author-social-links\"><div class=\"social-icon\"><a href=\"https:\/\/www.linkedin.com\/in\/navnath-phapal-84024b331\" target=\"_blank\" rel=\"nofollow noopener\"><i class=\"icon-sprite linkedin\"><\/i><\/a><\/div><\/div>\n                    <a href=\"javascript:void(0);\" class=\"read-more-link read-less-btn\" onclick=\"toggleAuthorBio(this); return false;\" style=\"display: none;\">Read less <noscript><img decoding=\"async\" src=\"\/assets\/images\/blog\/Vector.png\" alt=\"collapse\" class=\"read-more-arrow up-arrow\"><\/noscript><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"collapse\" class=\"read-more-arrow up-arrow lazyload\" data-src=\"\/assets\/images\/blog\/Vector.png\"><\/a>\n                <\/div>\n            <\/div>\n        <\/div>\n        <div class=\"share-section\">\n            <span class=\"share-label\">Share Article<\/span>\n            <div class=\"social-share-buttons\">\n                <a href=\"https:\/\/www.facebook.com\/sharer\/sharer.php?u=https%3A%2F%2Fmobisoftinfotech.com%2Fresources%2Fblog%2Fdevops%2Fdocker-image-vs-container-lifecycle\" target=\"_blank\" class=\"share-btn facebook-share\"><i class=\"fa fa-facebook-f\"><\/i><\/a>\n                <a href=\"https:\/\/www.linkedin.com\/sharing\/share-offsite\/?url=https%3A%2F%2Fmobisoftinfotech.com%2Fresources%2Fblog%2Fdevops%2Fdocker-image-vs-container-lifecycle\" target=\"_blank\" class=\"share-btn linkedin-share\"><i class=\"fa fa-linkedin\"><\/i><\/a>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n\n\n<style>\n.wp-block-table .has-fixed-layout td, .wp-block-table .has-fixed-layout th{font-weight: 500;}\n.hljs-title, .hljs-section, .hljs-keyword, .hljs-attribute, .hljs-selector-tag, .hljs-meta-keyword, .hljs-doctag, .hljs-name{    font-weight: normal;}\n.post-content p span, .post-content li span {\n    font-weight: 500 !important;\n}\n.post-content li:before{top:8px;}\n.post-details-title{font-size:42px}\nh6.wp-block-heading {\n    line-height: 2;\n}\n.social-icon{\ntext-align:left;\n}\nspan.bullet{\nposition: relative;\npadding-left:20px;\n}\n.ta-l,.post-content .auth-name{\ntext-align:left;\n}\nspan.bullet:before {\n    content: '';\n    width: 9px;\n    height: 9px;\n    background-color: #0d265c;\n    border-radius: 50%;\n    position: absolute;\n    left: 0px;\n    top: 3px;\n}\n.post-content p{\n    margin: 20px 0 20px;\n}\n.image-container{\n    margin: 0 auto;\n    width: 50%;\n}\nh5.wp-block-heading{\nfont-size:18px;\nposition: relative;\n\n}\nh4.wp-block-heading{\nfont-size:20px;\nposition: relative;\n\n}\nh3.wp-block-heading{\nfont-size:22px;\nposition: relative;\n\n}\n.para-after-small-heading {\n    margin-left: 40px !important;\n}\nh4.wp-block-heading.h4-list, h5.wp-block-heading.h5-list{ padding-left: 20px; margin-left:20px;}\nh3.wp-block-heading.h3-list {\n    position: relative;\nfont-size:20px;\n    margin-left: 20px;\n    padding-left: 20px;\n}\n\nh3.wp-block-heading.h3-list:before, h4.wp-block-heading.h4-list:before, h5.wp-block-heading.h5-list:before {\n    position: absolute;\n    content: '';\n    background: #0d265c;\n    height: 9px;\n    width: 9px;\n    left: 0;\n    border-radius: 50px;\n    top: 8px;\n}\n@media only screen and (max-width: 991px) {\nul.wp-block-list.step-9-ul {\n    margin-left: 0px;\n}\n.step-9-h4{padding-left:0px;}\n    .post-content li {\n       padding-left: 25px;\n    }\n    .post-content li:before {\n        content: '';\n         width: 9px;\n        height: 9px;\n        background-color: #0d265c;\n        border-radius: 50%;\n        position: absolute;\n        left: 0px;\n        top: 8px;\n    }\n}\n@media (max-width:767px) {\n  .image-container{\n    width:90% !important;\n  }\n  \n}\n<\/style>\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Article\",\n  \"mainEntityOfPage\": {\n    \"@type\": \"WebPage\",\n    \"@id\": \"https:\/\/mobisoftinfotech.com\/resources\/blog\/devops\/docker-image-vs-container-lifecycle\"\n  },\n  \"headline\": \"Docker Image vs Container: Understanding the Lifecycle & Key Differences\",\n  \"description\": \"Learn the key differences between Docker images and containers. Explore their lifecycle, states, and best practices for managing Docker environments.\",\n  \"image\": \"https:\/\/mobisoftinfotech.com\/resources\/wp-content\/uploads\/2025\/09\/docker-image-vs-container-lifecycle\",\n  \"author\": {\n    \"@type\": \"Person\",\n    \"name\": \"Navnath Phapal\",\n    \"description\": \"Navnath Phapal is an Infrastructure Engineer at Mobisoft Infotech, bringing over 6 years of experience in designing and managing scalable, automated infrastructure solutions. Passionate about continuous learning and emerging technologies, he focuses on optimizing systems and streamlining operations through automation. Navnath\u2019s curiosity and strong engineering foundation drive his commitment to building resilient, future-ready infrastructure in today\u2019s fast-paced tech landscape.\"\n  },\n  \"publisher\": {\n    \"@type\": \"Organization\",\n    \"name\": \"Mobisoft Infotech\",\n    \"logo\": {\n      \"@type\": \"ImageObject\",\n      \"url\": \"https:\/\/mobisoftinfotech.com\/assets\/images\/mshomepage\/MI_Logo-white.svg\",\n      \"width\": 600,\n      \"height\": 600\n    }\n  },\n  \"datePublished\": \"2025-09-01\",\n  \"dateModified\": \"2025-09-01\"\n}\n<\/script>\n <script type=\"application\/ld+json\">\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"LocalBusiness\",\n    \"name\": \"Mobisoft Infotech\",\n    \"url\": \"https:\/\/mobisoftinfotech.com\",\n    \"logo\": \"https:\/\/mobisoftinfotech.com\/assets\/images\/mshomepage\/MI_Logo-white.svg\",\n    \"description\": \"Mobisoft Infotech specializes in custom software development and digital solutions.\",\n    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