1. docker rmi

1.1. 描述

删除一个或多个镜像

删除镜像时可以通过镜像短 ID、镜像长 ID、镜像 tag，可以通过任意一种方式删除数据。

如果一个镜像具有多个 tags，需要删除所有的 tags 后才能删除掉该镜像。

1.2. 帮助

$ docker rmi --help

Usage: docker rmi [OPTIONS] IMAGE [IMAGE...]

Remove one or more images

Options:
  -f, --force Force removal of the image
      --no-prune Do not delete untagged parents

1.3. 选项

1.4. 示例

• 删除多个 tag 后在删除镜像

$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
test1 latest fd484f19954f 23 seconds ago 7 B (virtual 4.964 MB)
test latest fd484f19954f 23 seconds ago 7 B (virtual 4.964 MB)
test2 latest fd484f19954f 23 seconds ago 7 B (virtual 4.964 MB)

$ docker rmi fd484f19954f
Error: Conflict, cannot delete image fd484f19954f because it is tagged in multiple repositories, use -f to force
2013/12/11 05:47:16 Error: failed to remove one or more images

$ docker rmi test1:latest
Untagged: test1:latest

$ docker rmi test2:latest
Untagged: test2:latest

$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
test latest fd484f19954f 23 seconds ago 7 B (virtual 4.964 MB)

$ docker rmi test:latest
Untagged: test:latest
Deleted: fd484f19954f4920da7ff372b5067f5b7ddb2fd3830cecd17b96ea9e286ba5b8

• 强制删除镜像

如果使用该 -f 标志并指定镜像的短 ID 或长 ID，则此命令删除所有与指定 ID 匹配的镜像 tag。

$ docker images

REPOSITORY TAG IMAGE ID CREATED SIZE
test1 latest fd484f19954f 23 seconds ago 7 B (virtual 4.964 MB)
test latest fd484f19954f 23 seconds ago 7 B (virtual 4.964 MB)
test2 latest fd484f19954f 23 seconds ago 7 B (virtual 4.964 MB)

$ docker rmi -f fd484f19954f

Untagged: test1:latest
Untagged: test:latest
Untagged: test2:latest
Deleted: fd484f19954f4920da7ff372b5067f5b7ddb2fd3830cecd17b96ea9e286ba5b8

• 通过 sha256 删除

下载的镜像没有tag

$ docker images --digests
REPOSITORY TAG DIGEST IMAGE ID CREATED SIZE
localhost:5000/test/busybox <none> sha256:cbbf2f9a99b47fc460d422812b6a5adff7dfee951d8fa2e4a98caa0382cfbdbf 4986bf8c1536 9 weeks ago 2.43 MB

通过 sha256 删除镜像

$ docker rmi localhost:5000/test/busybox@sha256:cbbf2f9a99b47fc460d422812b6a5adff7dfee951d8fa2e4a98caa0382cfbdbf
Untagged: localhost:5000/test/busybox@sha256:cbbf2f9a99b47fc460d422812b6a5adff7dfee951d8fa2e4a98caa0382cfbdbf
Deleted: 4986bf8c15363d1c5d15512d5266f8777bfba4974ac56e3270e7760f6f0a8125
Deleted: ea13149945cb6b1e746bf28032f02e9b5a793523481a0a18645fc77ad53c4ea2
Deleted: df7546f9f060a2268024c8a230d8639878585defcc1bc6f79d2728a13957871b