How to remove unused Docker containers and images

remove-docker.md

1. Removing all images is

    #!/bin/bash
    $ docker ps -q -a | xargs docker rm -f
   

2. Removing all containers

    #!/bin/bash
    # Delete all dangling (unused) images
    docker rmi $( docker images -f dangling=true -q )
   

3. Remove volumes

    #!/bin/bash
    docker volume rm $(docker volume ls -qf dangling=true)