Docker

Docker CLI

See Full CLI reference for a comprehensive documentation

Getting information

Command	Result
docker version	Get version info about docker
docker info	Get overview of different docker info
docker ps	List running containers
docker ps -a	List all existing containers
docker system df	Get storage usage of Docker
docker system top	Get running process of a container
docker stats	List live stream of container usage

Managing volumes

Command	Result
docker volume ls	List all docker volumes
docker volume inspect VOLUME-ID	List detailed volume information

Managing images

Command	Result
docker image ls	List local images
docker rmi IMAGE-ID	Remove specified image
docker image prune	Remove unused images
docker image prune -a	Remove all images

Managing container

Command	Result
docker exec -it CONTAINER-ID [bash\|sh]	Log into the container
docker exec CONTAINER-ID command	Executes command in the container

Clean up

Command	Result
docker stop $(docker ps)	Stops all running containers
docker rm $(docker ps -q)	Removes all containers
docker rm $(docker image ls -q)	Deletes all images
docker builder prune	Clear all the build cache

Alternative for Docker API 1.25 and greater:

Command	Result
docker system prune	Removes unused data
docker system prune -a	Removes unused data but not just dangling images

Prevent a container from exiting

After starting a service via docker-compose Docker will shut it down if there is no process running. To prevent that you can call a "dummy" endless command - in this case by overriding the entrypoint with a simple ping.

entrypoint: ping localhost

Exec a command without entering a container

docker exec CONTAINER sh -c "cat /tmp/test"

Tag and push

registry.port/ is optional when pushing to duckerhub

docker login
docker build . -t foobar
docker tag foobar registry:port/name/foobar
docker push foobar registry:port/name/foobar