如何卸载docker

1.卸载

（1）yum remove docker 
                  docker-client 
                  docker-client-latest 
                  docker-common 
                  docker-latest 
                  docker-latest-logrotate 
                  docker-logrotate 
                  docker-selinux 
                  docker-engine-selinux 
                  docker-engine

（2）rm -rf /etc/systemd/system/docker.service.d

（3）rm -rf /var/lib/docker

（4）rm -rf /var/run/docker