Docker Cheat Sheet¶
A complete cheat sheet can be found here
Lifecycle¶
- [docker create](https://docs.docker.com/reference/commandline/create) creates a container but does not start it.
- [docker run](https://docs.docker.com/reference/commandline/run) creates and starts a container in one operation.
- [docker rename](https://docs.docker.com/engine/reference/commandline/rename/) allows the container to be renamed.
- [docker rm](https://docs.docker.com/reference/commandline/rm) deletes a container.
- [docker update](https://docs.docker.com/engine/reference/commandline/update/) updates a container’s resource limits.
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¶
- [docker start](https://docs.docker.com/reference/commandline/start) starts a container so it is running.
- [docker stop](https://docs.docker.com/reference/commandline/stop) stops a running container.
- [docker restart](https://docs.docker.com/reference/commandline/restart) stops and starts a container.
- [docker pause](https://docs.docker.com/engine/reference/commandline/pause/) pauses a running container, “freezing” it in place.
- [docker attach](https://docs.docker.com/reference/commandline/attach) will connect to a running container.
Info¶
- [docker ps](https://docs.docker.com/reference/commandline/ps) shows running containers.
- [docker logs](https://docs.docker.com/reference/commandline/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](https://docs.docker.com/reference/commandline/inspect) looks at all the info on a container (including IP address).
- [docker events](https://docs.docker.com/reference/commandline/events) gets events from container.
- [docker port](https://docs.docker.com/reference/commandline/port) shows public facing port of container.
- [docker top](https://docs.docker.com/reference/commandline/top) shows running processes in container.
- [docker stats](https://docs.docker.com/reference/commandline/stats) shows containers’ resource usage statistics.
- [docker diff](https://docs.docker.com/reference/commandline/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¶
- [docker exec](https://docs.docker.com/reference/commandline/exec) to execute a command in container.
To enter a running container, attach a new shell process to a running container called foo, use: docker exec -it foo /bin/bash.
Images¶
Images are just [templates for docker containers](https://docs.docker.com/engine/understanding-docker/#how-does-a-docker-image-work).
- [docker images](https://docs.docker.com/reference/commandline/images) shows all images.
- [docker build](https://docs.docker.com/reference/commandline/build) creates image from Dockerfile.