docker 无法删除镜像hello-world

场景：

在运行docker示例时，在运行删除镜像的命令，如下：

docker rmi hello-world

发生如下报错：

Error response from daemon: conflict: unable to remove repository reference "hello-world" (must force) - container 6bf7c8fb514f is using its referenced image bf756fb1ae65

出现这个问题的原因是删除的这个images可能被依赖与其他的container,

于是乎，查询容器：

docker ps -a

查询结果如下：

CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                      PORTS               NAMES
b10bead9d787        httpd               "httpd-foreground"       5 minutes ago       Exited (0) 4 minutes ago                        sweet_thompson
8ff5c1e24d7c        ubuntu:14.04        "/bin/bash"              45 minutes ago      Exited (1) 45 minutes ago                       eloquent_turing
a58b65c662ba        training/webapp     "python app.py"          2 days ago          Exited (137) 2 days ago                         amazing_volhard
68e267cda2c6        test/ubuntu:v1      "/bin/bash"              2 days ago          Exited (0) 2 days ago                           hungry_mendel
b9293b5d514d        test/ubuntu:v1      "/bin/bash"              2 days ago          Exited (0) 2 days ago                           interesting_kowalevski
77ca254ec6f3        ubuntu              "/bin/bash"              2 days ago          Exited (0) 2 days ago                           ubuntu-test
70e462d2b4ef        ubuntu              "/bin/bash"              2 days ago          Exited (0) 2 days ago                           amazing_lumiere
d2c4d889eb8a        ubuntu              "/bin/bash"              2 days ago          Exited (0) 2 days ago                           serene_black
9dc8fd336c9f        ubuntu              "/bin/bash"              2 days ago          Exited (0) 2 days ago                           interesting_tereshkova
2e1be34f6db0        ubuntu              "/bin/sh -c 'while t…"   2 days ago          Exited (137) 2 days ago                         clever_hamilton
c244e5a63ce1        ubuntu:latest       "/bin/bash"              2 days ago          Exited (0) 2 days ago                           pensive_chaplygin
a5e07c4e8cc3        ubuntu              "/bin/echo 'Hello wo…"   2 days ago          Exited (0) 2 days ago                           nifty_gauss
4cab1f988c00        ubuntu              "bash"                   3 days ago          Exited (130) 3 days ago                         dazzling_pike
6bf7c8fb514f        hello-world         "/hello"                 3 days ago          Exited (0) 3 days ago                           unruffled_germain

这下就看到原因了，原来container使用到了这个images,这样问题就简单了

docker rm 6bf7c8fb514f

注意：rm 命令后面的是containerID 根据各自情况变化

然后，再删除images

docker image rm hello-world

运行结果如下：

Untagged: hello-world:latest
Untagged: hello-world@sha256:8e3114318a995a1ee497790535e7b88365222a21771ae7e53687ad76563e8e76
Deleted: sha256:bf756fb1ae65adf866bd8c456593cd24beb6a0a061dedf42b26a993176745f6b
Deleted: sha256:9c27e219663c25e0f28493790cc0b88bc973ba3b1686355f221c38a36978ac63

成功！！！

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附：

删除所有的container

docker rm $(docker ps -a -q)

删除所有的images

docker rmi $(docker images -q)