Freeing Up Disk Space Used by Docker

Today my computer ran out of disk space.

I narrowed it down with this command:

du -sh /* 2>/dev/null | sort -rh | head -20

The culprit was this file:

$HOME/Library/Container/com.docker.docker/Data/vms/0/data/Docker.raw

This command showed that my build cache was using over 200 GB:

docker system df -v

I cleaned it up using:

docker system prune --all