Ansible + Docker: Clean up unused, old containers and images to free up the disk space

DockerImageCleanup.yml

#
#   Created for free for the anarchist movement around the world.
#     See iwa-ait.org, zsp.net.pl, wolnosciowiec.net
#

- name: Schedule a clean up for Docker images
  become: yes
  cron:
      name: "docker-clean-up-images"
      minute: "0"
      hour: "22"
      job: "docker rmi $(docker images | awk '/^<none>/ { print $3 }') 2> /dev/null"
      day: "10"

- name: Schedule a clean up for Docker unused containers
  become: yes
  cron:
      name: "docker-clean-up-containers"
      minute: "0"
      hour: "22"
      job: "docker ps --filter 'status=exited' | grep 'weeks ago' | awk '{print $1}' | xargs --no-run-if-empty docker rm 2> /dev/null"
      day: "5"