Basic Docker Commands
As you start using Docker, you'll frequently need to manage images and containers. Here are the essential commands you should know.
Working with Images
- List images:
docker images(ordocker image ls) - Pull an image:
docker pull ubuntu(downloads the latest Ubuntu image) - Remove an image:
docker rmi ubuntu(ordocker image rm ubuntu)
Working with Containers
- Run a container:
docker run nginx(starts an Nginx container) - List running containers:
docker ps - List all containers:
docker ps -a - Stop a container:
docker stop container_id_or_name - Start a stopped container:
docker start container_id - Remove a stopped container:
docker rm container_id - Remove a running container forcefully:
docker rm -f container_id
Useful Options for docker run
-d– run in background (detached)-it– interactive mode with terminal--name– give the container a custom name-p– publish a port (e.g.,-p 8080:80)-v– mount a volume
docker run -d --name mynginx -p 8080:80 nginxmynginx, and maps port 8080 on your host to port 80 in the container.Clean Up Unused Resources
To free up disk space, you can remove unused containers, images, and networks:
docker system prune-a to also remove unused images.Two Minute Drill
- List images:
docker images; remove:docker rmi. - List containers:
docker ps(running),docker ps -a(all). - Stop:
docker stop; remove:docker rm. - Run in background:
docker run -d. - Clean up with
docker system prune.
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