删除镜像id（注意：只有当镜像id对应标签仅剩一个时，才能使用镜像id的方式进行删除；否则出现如下报错
或者也可以在最后加上-f选项，一次性删除）
1 [root@server1 yum.repos.d]# docker tag nginx:xin nginx:latest 2 [root@server1 yum.repos.d]# docker images 3 REPOSITORY TAG IMAGE ID CREATED SIZE 4 nginx latest bc9a0695f571 8 hours ago 133MB 5 nginx xin bc9a0695f571 8 hours ago 133MB 6 [root@server1 yum.repos.d]# docker rmi bc9a0695f571 #删除一个报错 7 Error response from daemon: conflict: unable to delete bc9a0695f571 (must be forced) - image is referenced in multiple repositories 8 [root@server1 yum.repos.d]# docker rmi -f bc9a0695f571 #加上-f可以一次性删除两个 9 Untagged: nginx:latest 10 Untagged: nginx:xin 11 Untagged: nginx@sha256:6b1daa9462046581ac15be20277a7c75476283f969cb3a61c8725ec38d3b01c3 12 Deleted: sha256:bc9a0695f5712dcaaa09a5adc415a3936ccba13fc2587dfd76b1b8aeea3f221c 13 Deleted: sha256:a6862ade3b91fdde2aa8a3d77fdcc95b1eb6c606be079c11b7f97f249d0e731d 14 Deleted: sha256:32bcbe3740b68d0625744e774b404140366c0c4a2b2eadf32280d66ba001b4fb 15 Deleted: sha256:2dc5e43f496e41a18c016904b6665454a53be22eb4dcc1b468d864b4e2d1f311 16 Deleted: sha256:5fe6a7c579cd9fbcfa604810974c4c0c16893f4c40bc801545607ebd0accea74 17 Deleted: sha256:f5600c6330da7bb112776ba067a32a9c20842d6ecc8ee3289f1a713b644092f8