docker shortcuts & cheatsheet

Commands

Attach to shell process of a running container:

docker exec -it <CONTAINER> bash
ctrl + p + ctrl + q detatch from container without exiting shell 
ctrl + q  exit while running in bash

Spin an image with another entrypoint if entrypoint in container stops before being able to attach to shell process of a running container

docker run -ti --entrypoint=bash <IMAGE>  

copies files or folders between a container and the local filesystem.

docker cp <CONTAINER>:<SRC_PATH> <DEST_PATH> (copying from container to local file)
docker cp <SRC_PATH> <CONTAINER>:<DEST_PATH>  (copying from local file to container)

Images

Lifecycle

docker images shows all images.
docker pull <IMAGE> pulls image from dockerhub
docker build <PATH> creates image from Dockerfile.
docker rmi <IMAGE> removes an image.
docker run <IMAGE> creates a container from image
  flags for docker run (add flag before <IMAGE>):
  -d detached container
  --rm container removed when it exits
  --name <NAME> names the container

Container

Lifecycle

docker start <CONTAINER> starts a container so it is running.
docker stop <CONTAINER> stops a running container.
docker rename <CONTAINER> <NEW_NAME>
docker restart <CONTAINER> stops and starts a container.
docker pause <CONTAINER> pauses a running container, "freezing" it in place.
docker unpause <CONTAINER> will unpause a running container.
docker kill <CONTAINER> sends a SIGKILL to a running container.
docker commit <CONTAINER> creates image from a container, pausing it temporarily if it is running.

Info

list all running docker containers:

docker ps
docker ps -a (includes stopped containers)

gets logs from container:

docker logs <CONTAINER> 
docker logs <CONTAINER> --follow (shows running log)

gets all container info (including IP address).:

docker inspect <CONTAINER> 

gets container's open ports:

docker port <CONTAINER>

shows container's running processes:

docker top <CONTAINER>

Cleanup

docker rm <CONTAINER...> removes container(s)
docker rmi <IMAGE...> remove image(s)
docker system prune  removes all unused containers, networks, images