image is referenced in multiple repositories

同一个镜像id指向了两个repository，因此无法删除

采用id删除 会出现报错提示

[root@localhost ~]# docker rmi 5f47254ca581
Error response from daemon: conflict: unable to delete 5f47254ca581 (must be forced) - image is referenced in multiple repositories

解决办法:用repository和tag的方式来删除

[root@localhost ~]# docker rmi mysql:5.7
Untagged: mysql:5.7
[root@localhost ~]# docker images
REPOSITORY   TAG       IMAGE ID       CREATED      SIZE
mysql        5.7.33    5f47254ca581   8 days ago   449MB