created: 01/02/2019
updated: 09/03/2019

containers and such…

• https://github.com/wsargent/docker-cheat-sheet

remove containers and images

• https://www.digitalocean.com/community/tutorials/how-to-remove-docker-images-containers-and-volumes
• https://docs.docker.com/engine/reference/commandline/image_prune/