docker导入镜像后怎么启动

[root@server1 ~]# ls
docker  game2048.tar  nginx.tar  ubuntu.tar58
[root@server1 ~]# docker load -i ubuntu.tar 
56abdd66ba31: Loading layer  196.8MB/196.8MB
9468150a390c: Loading layer  208.9kB/208.9kB
11083b444c90: Loading layer  4.608kB/4.608kB
5f70bf18a086: Loading layer  1.024kB/1.024kB
Loaded image: ubuntu:latest

[root@server1 ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
game2048            latest              19299002fdbe        2 years ago         55.5MB
ubuntu              latest              07c86167cdc4        3 years ago         188MB

[root@server1 ~]# docker run -it --name vm2 ubuntu
root@3800b84ec229:/# ls
root@3800b84ec229:/# ip addr   #可以查看到ip
crtl pq退出