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Docker Cheat Sheet

A complete cheat sheet can be found here

Lifecycle

If you want a transient container, docker run --rm will remove the container after it stops.

If you want to map a directory on the host to a docker container, docker run -v $HOSTDIR:$DOCKERDIR.

Starting and Stopping

Info

  • docker ps shows running containers.
  • docker logs gets logs from container. (You can use a custom log driver, but logs is only available for json-file and journald in 1.10)
  • docker inspect looks at all the info on a container (including IP address).
  • docker events gets events from container.
  • docker port shows public facing port of container.
  • docker top shows running processes in container.
  • docker stats shows containers' resource usage statistics.
  • docker diff shows changed files in the container's FS.

docker ps -a shows running and stopped containers.

docker stats --all shows a running list of containers.

Executing Commands

To enter a running container, attach a new shell process to a running container called foo, use: docker exec -it foo /bin/bash.

Images


Last update: 2021-06-19