Docker with a local mirror source, when the creation or to pull it?

root@docker_01 ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE hub.c.163.com/public/centos 6.7-tools b2ab0ed558bb 6 weeks ago 601.9 MB hub.c.163.com/public/centos 7.0 2ce04a284fa8 9 months ago 287.9 MB hub.c.163.com/public/centos latest 997f0ed97903 13 months ago 441.8 MB 
 [root@docker_01 ~]# docker run --name ceshi -it centos Unable to find image 'centos:latest' locally Trying to pull repository docker.io/library/centos ... 

The The The What is this? I follow the following method to enter. The The

 [root@docker_01 ~]# docker ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 98a498cff145 hub.c.163.com/public/centos:6.7-tools "/usr/bin/supervisord" 3 minutes ago Up 3 minutes 22/tcp ceshi_2 [root@docker_01 ~]# sh d.sh 98a498cff145 3396 [root@98a498cff145 ~]# ls anaconda-ks.cfg d.sh new.file [root@98a498cff145 ~]# exit logout [root@docker_01 ~]# ls anaconda-ks.cfg d.sh new.file 
 [root@docker_01 ~]# cat d.sh #!/bin/bash PID=$(docker inspect --format "{{.State.Pid}}" $1) echo $PID nsenter -t $PID -u -i -n -p 

Why is the physical system and the container inside the file are the same? The The The The

Heads up! This alert needs your attention, but it's not super important.