sudo service docker start

sudo service docker start

sudo docker run -t -i ubuntu:14.04 /bin/bash

docker ps -l CONTAINER ID IMAGE

  #docker ps -l          //查看一下结束容器的ID 

            #docker start -i <容器ID>        //来启动

# 重命名image
docker tag image_name new_image_name

$docker commit ID new_image_name