Cleaning up Docker disk space

Docker seems to eat disk space and leave a lot of left overs around. Here are some resources to fix that.

Docker image prune (the new standard fix)

docker image prune

https://docs.docker.com/config/pruning/
https://docs.docker.com/engine/reference/commandline/image_prune/
https://gist.github.com/anildigital/862675ec1b7bccabc311

General Info
https://www.digitalocean.com/community/tutorials/how-to-remove-docker-images-containers-and-volumes

https://stackoverflow.com/questions/17665283/how-does-one-remove-an-image-in-docker


Is the /var/lib/docker/ folder large?
sudo du -sh /var/lib/docker/

If it's large, may need to zap it (careful with this one!):
Ref: https://stackoverflow.com/questions/45798076/how-to-clean-up-docker

$ sudo su
# service docker stop
# cd /var/lib/docker
# rm -rf *
# service docker start

For more info about this folder see: https://stackoverflow.com/questions/19234831/where-are-docker-images-stored-on-the-host-machine

And also......try removing dangling images

https://forums.docker.com/t/how-to-remove-none-images-after-building/7050/3

List dangling:
docker images -f "dangling=true" -q

Delete dangling:
docker rmi $(docker images -f "dangling=true" -q)

Force delete dangling:
docker rmi -f $(docker images -f "dangling=true" -q)