Comment 3 for bug 1906959

Just to verify, I installed docker.io version 19.03.8-0ubuntu1.20.04.1, started up dockerd, verified /var/lib/docker got some content in it, and then stopped dockerd and ran "apt purge docker.io", and "/var/lib/docker" was properly emptied. It was not removed completely (in case it's a mount point or something similar), but there's no content in it (left as just an empty directory).