Docker Commands: A Comprehensive Guide

Introduction:

Docker commands are the building blocks of managing containers, images, networks, and volumes within the Docker ecosystem. Understanding these commands is essential for developers, system administrators, and DevOps engineers who work with Docker on a daily basis. In this guide, we'll provide a comprehensive overview of Docker commands, covering everything from container lifecycle management to image manipulation and network configuration.

Docker Commands:

1. Managing Containers:

   • docker run: Create and start a new container.
   • docker start: Start one or more stopped containers.
   • docker stop: Stop one or more running containers.
   • docker restart: Restart one or more containers.
   • docker pause: Pause one or more running containers.
   • docker unpause: Unpause one or more paused containers.
   • docker rm: Remove one or more containers.
   • docker ps: List running containers.
   • docker ps -a: List all containers (including stopped ones).

2. Working with Images:

   • docker pull: Pull an image or a repository from a registry.
   • docker build: Build an image from a Dockerfile.
   • docker push: Push an image or a repository to a registry.
   • docker images: List all locally available images.
   • docker rmi: Remove one or more images.
   • docker inspect: Display detailed information about an image or a container.

3. Managing Networks:

   • docker network create: Create a new network.
   • docker network ls: List all networks.
   • docker network inspect: Display detailed information about a network.
   • docker network connect: Connect a container to a network.
   • docker network disconnect: Disconnect a container from a network.

4. Working with Volumes:

   • docker volume create: Create a new volume.
   • docker volume ls: List all volumes.
   • docker volume inspect: Display detailed information about a volume.
   • docker volume rm: Remove one or more volumes.
   • docker volume prune: Remove all unused volumes.

5. Container Logs and Executions:

   • docker logs: Fetch the logs of a container.
   • docker exec: Run a command in a running container.
   • docker attach: Attach to a running container (stdin, stdout, stderr).

6. Container Lifecycle Management:

   • docker start: Start one or more stopped containers.
   • docker stop: Stop one or more running containers.
   • docker restart: Restart one or more containers.
   • docker pause: Pause one or more running containers.
   • docker unpause: Unpause one or more paused containers.

7. Miscellaneous:

   • docker version: Show the Docker version information.
   • docker info: Display system-wide information about Docker.
   • docker system prune: Remove all stopped containers, dangling images, and unused networks and volumes.
   • docker search: Search for Docker images on Docker Hub.

Conclusion:

Mastering Docker commands is essential for efficiently managing containers, images, networks, and volumes within Docker environments. By familiarizing yourself with these commands, you can streamline your Docker workflow, troubleshoot issues, and optimize resource utilization. Whether you're a developer, system administrator, or DevOps engineer, having a solid understanding of Docker commands will empower you to harness the full potential of containerization in your projects. Happy Dockerizing!