清理exited进程：
docker rm $(docker ps -q -f status=exited)清理dangling volumes：
docker volume rm $(docker volume ls -qf dangling=true)清理dangling image：
docker rmi $(docker images --filter "dangling=true" -q --no-trunc)devmapper: Thin Pool has 154464 free data blocks which is less than minimum required 163840 free dat
原文：http://www.cnblogs.com/suanec/p/7687601.html