Useful commands to free Docker space

free.docker.space.sh

# Stop and remove all containers
docker rm -f $(docker ps -a -q)

# Remove all images
docker rmi $(docker images -a -q)

# Remove other unused docker data, i.e. networks
docker system prune

# Remove all the unused docker volumes (frees lots of space!)
docker system prune --volumes

# How to remove stuck Docker volumes in case Docker files in /tmp were accidentally deleted
# https://github.com/moby/moby/issues/3894

# If needed remove the BTRFS volumes
cd /var/lib/docker/btrfs

for f in *
do
  btrfs subvolume delete $f
done