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Quick summary of this article

This article provides a quick reference for essential Docker commands, covering containers, images, volumes, and networks. It also includes best practices for efficient and secure container management, such as using descriptive names and regularly cleaning up unused resources.

Use docker ps -a to list all containers, including stopped ones, before stopping or removing them.
Give containers and volumes descriptive names to simplify management and avoid confusion.
Run docker system prune regularly to free up disk space by removing unused containers, images, and networks.
Automate workflows by combining Docker commands with scripts or using Docker Compose for multi-container applications.
Use docker stats to monitor the CPU and memory usage of running containers.

Docker – Commands

Docker provides a powerful CLI (Command Line Interface) to manage containers, images, networks, and volumes. Knowing essential Docker commands helps you efficiently run and maintain containerized applications.

Container Commands

docker run – Run a new container from an image.
docker ps – List running containers.
docker ps -a – List all containers including stopped ones.
docker stop <container_name> – Stop a running container.
docker start <container_name> – Start a stopped container.
docker restart <container_name> – Restart a container.
docker exec -it <container_name> bash – Access container shell.
docker logs <container_name> – View container logs.

Image Commands

docker images – List all Docker images.
docker pull <image_name> – Download an image from a registry.
docker build -t <image_name> . – Build an image from Dockerfile.
docker rmi <image_name> – Remove a Docker image.

Volume Commands

docker volume create <volume_name> – Create a new volume.
docker volume ls – List all volumes.
docker volume inspect <volume_name> – Inspect volume details.
docker volume rm <volume_name> – Remove a volume.

Network Commands

docker network ls – List all networks.
docker network create <network_name> – Create a new network.
docker network inspect <network_name> – Inspect network details.
docker network rm <network_name> – Remove a network.

Other Useful Commands

docker system prune – Clean up unused containers, images, and networks.
docker stats – Display running container resource usage.
docker info – Show Docker system information.
docker version – Show Docker client and server version.

Best Practices for Docker Commands

Always check running containers before stopping or removing them.
Use descriptive names for containers and volumes for easy management.
Prune unused resources regularly to save disk space.
Combine commands with scripts for automation and CI/CD pipelines.
Use Docker Compose for managing multiple containers efficiently.

Conclusion

Mastering Docker commands allows you to efficiently manage containers, images, networks, and volumes. Using best practices and proper CLI knowledge ensures smooth development and production workflows.

27. Docker Security | Best Practices for Secure Containers