解決刪除鏡像時image is referenced in multiple repositories

1、查看鏡像 docker images

rt@123:~# docker images
REPOSITORY                                  TAG                 IMAGE ID            CREATED             SIZE
192.168.0.1/jii/jenkins                    1.0.1              3391ef1391f6        18 hours ago        206 MB
192.168.0.1/you/tom                        1.0.8              f8ab12e03d53        22 hours ago        276 MB
192.168.0.1/you/tom                        1.0.9              f8ab12e03d53        22 hours ago        276 MB

2、刪除鏡像，會報錯

rt@123:~# docker rmi f8ab12e03d53
Error response from daemon: conflict: unable to delete f8ab12e03d53 (must be forced) - image is referenced in multiple repositories

仔細觀察，發現f8ab12e03d53這個鏡像id指向了兩個repository，因此無法刪除

3、刪除時可以用repository和tag的方式來刪除

rt@123:~# docker rmi 192.168.0.1/you/tom:1.0.8
Untagged:192.168.0.1/you/tom:1.0.8

4、再次查看鏡像，1.0.8的就被刪除了。

rt@123:~# docker images
REPOSITORY                                  TAG                 IMAGE ID            CREATED             SIZE
192.168.0.1/jii/jenkins                    1.0.1              3391ef1391f6        18 hours ago        206 MB
192.168.0.1/you/tom                        1.0.9              f8ab12e03d53        22 hours ago        276 MB