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2f048f73e1
When pulling an image with content trust enabled, two references are created: a digest reference and a tag reference. Deleting by tag wouldn't actually remove the image, because the digest reference keeps it alive. This change modifies the rmi logic so that digest references don't keep an image alive. If the last tag referencing a given image is deleted, any digest references to it will be removed as well, so the image can actually get deleted. This fixes the usability problem with deletions when content trust is in use, so something like "docker pull busybox; docker rmi busybox" will work as expected. Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
75 lines
3.4 KiB
Markdown
75 lines
3.4 KiB
Markdown
<!--[metadata]>
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+++
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title = "rmi"
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description = "The rmi command description and usage"
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keywords = ["remove, image, Docker"]
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[menu.main]
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parent = "smn_cli"
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+++
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<![end-metadata]-->
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# rmi
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Usage: docker rmi [OPTIONS] IMAGE [IMAGE...]
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Remove one or more images
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-f, --force Force removal of the image
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--help Print usage
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--no-prune Do not delete untagged parents
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You can remove an image using its short or long ID, its tag, or its digest. If
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an image has one or more tag referencing it, you must remove all of them before
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the image is removed. Digest references are removed automatically when an image
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is removed by tag.
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$ docker images
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REPOSITORY TAG IMAGE ID CREATED SIZE
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test1 latest fd484f19954f 23 seconds ago 7 B (virtual 4.964 MB)
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test latest fd484f19954f 23 seconds ago 7 B (virtual 4.964 MB)
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test2 latest fd484f19954f 23 seconds ago 7 B (virtual 4.964 MB)
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$ docker rmi fd484f19954f
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Error: Conflict, cannot delete image fd484f19954f because it is tagged in multiple repositories, use -f to force
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2013/12/11 05:47:16 Error: failed to remove one or more images
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$ docker rmi test1
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Untagged: test1:latest
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$ docker rmi test2
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Untagged: test2:latest
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$ docker images
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REPOSITORY TAG IMAGE ID CREATED SIZE
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test latest fd484f19954f 23 seconds ago 7 B (virtual 4.964 MB)
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$ docker rmi test
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Untagged: test:latest
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Deleted: fd484f19954f4920da7ff372b5067f5b7ddb2fd3830cecd17b96ea9e286ba5b8
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If you use the `-f` flag and specify the image's short or long ID, then this
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command untags and removes all images that match the specified ID.
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$ docker images
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REPOSITORY TAG IMAGE ID CREATED SIZE
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test1 latest fd484f19954f 23 seconds ago 7 B (virtual 4.964 MB)
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test latest fd484f19954f 23 seconds ago 7 B (virtual 4.964 MB)
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test2 latest fd484f19954f 23 seconds ago 7 B (virtual 4.964 MB)
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$ docker rmi -f fd484f19954f
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Untagged: test1:latest
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Untagged: test:latest
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Untagged: test2:latest
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Deleted: fd484f19954f4920da7ff372b5067f5b7ddb2fd3830cecd17b96ea9e286ba5b8
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An image pulled by digest has no tag associated with it:
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$ docker images --digests
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REPOSITORY TAG DIGEST IMAGE ID CREATED VIRTUAL SIZE
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localhost:5000/test/busybox <none> sha256:cbbf2f9a99b47fc460d422812b6a5adff7dfee951d8fa2e4a98caa0382cfbdbf 4986bf8c1536 9 weeks ago 2.43 MB
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To remove an image using its digest:
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$ docker rmi localhost:5000/test/busybox@sha256:cbbf2f9a99b47fc460d422812b6a5adff7dfee951d8fa2e4a98caa0382cfbdbf
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Untagged: localhost:5000/test/busybox@sha256:cbbf2f9a99b47fc460d422812b6a5adff7dfee951d8fa2e4a98caa0382cfbdbf
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Deleted: 4986bf8c15363d1c5d15512d5266f8777bfba4974ac56e3270e7760f6f0a8125
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Deleted: ea13149945cb6b1e746bf28032f02e9b5a793523481a0a18645fc77ad53c4ea2
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Deleted: df7546f9f060a2268024c8a230d8639878585defcc1bc6f79d2728a13957871b
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