Docker References

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Debugging

Shell Into Running Docker Container

Shell into a running container by using exec and enabling interactive (-i) and tty (-t). This can be used to run any commands though running a shell is the most useful for debugging.

# syntax
docker exec -it <docker_container> <command>

# example
docker exec –it nginx /bin/bash

Cleanup

Purge All Unused or Dangling Images, Containers, Volumes, and Networks

# remove all dangling docker artifacts
docker system prune -a

# remove dangling volumes
docker volume prune

Remove All Exited Containers

docker rm $(docker ps -a -f status=exited -q)

Stop and Remove All Containers

docker stop $(docker ps -a -q)
docker rm $(docker ps -a -q)

Remove All Docker Images

docker rmi $(docker images -a -q)