dhclient
yum install docker

service docker start

docker images

docker run hello-world

docker pull busybox
docker run busybox

docker run -it busybox sh

docker ps

docker ps -a

docker ps -a -q 

docker ps -a -q -f status=exited

docker ps hello-world

docker stop $(docker ps -a -q)
docker rm $(docker ps -a -q)