$ docker run -v /var/run/docker.sock:/var/run/docker.sock \
  -v /var/lib/docker:/var/lib/docker --privileged 951acdb777bf

Delete unused volume directories from /var/lib/docker/volumes
Deleting 659cfdc5d394ec7ad5942862ba5feb1d24c9f67ca314462207835ef5bf657131
In use 6ae01c5524267c8f01f1d1e83933b494fdb5c709d9468122b470bfcdd5a5b03d
Deleting 73260d192a0a4d0ebc3606d9daf7137ab220e41cbbfe919ef1dded01a2f37b29

Delete unused volume directories from /var/lib/docker/vfs/dir
Deleting 659cfdc5d394ec7ad5942862ba5feb1d24c9f67ca314462207835ef5bf657131
In use 6ae01c5524267c8f01f1d1e83933b494fdb5c709d9468122b470bfcdd5a5b03d
Deleting 73260d192a0a4d0ebc3606d9daf7137ab220e41cbbfe919ef1dded01a2f37b29
