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releng: Remove workaround for skopeo feature we didn't know about

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It turns out skopeo *does* support not saying the tag, but I couldn't
find it in the docs.

Asking the author in https://github.com/containers/skopeo/issues/2354
yielded that this can be requested as `@@unknown-digest@@`.

So now we have a perfectly cromulent docker upload chain, yay!!

Change-Id: I256f3cbeef4fe28b3d68d0dda57f02cdaee3996b
This commit is contained in:
jade 2024-06-28 13:56:11 -07:00
parent 73c013a5df
commit eecc4ff1c0
1 changed files with 3 additions and 17 deletions
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20
releng/docker.xsh
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@ -44,23 +44,8 @@ def upload_docker_images(target: DockerTarget, paths: list[Path]):
for path in paths:
digest_file = tmp / (path.name + '.digest')
tmp_image = tmp / 'tmp-image.tar.gz'
# insecure-policy: we don't have any signature policy, we are just uploading an image
#
# Absurd: we copy it into an OCI image first so we can get the hash
# we need to upload it untagged, because skopeo has no "don't tag
# this" option.
# The reason for this is that forgejo's container registry throws
# away old versions of tags immediately, so we cannot use a temp
# tag, and it *does* reduce confusion to not upload tags that
# should not be used.
#
# Workaround for: https://github.com/containers/skopeo/issues/2354
log.info('skopeo copy to temp oci-archive %s', tmp_image)
skopeo --insecure-policy copy --format oci --all --digestfile @(digest_file) docker-archive:@(path) oci-archive:@(tmp_image)
inspection = json.loads($(skopeo inspect oci-archive:@(tmp_image)))
inspection = json.loads($(skopeo inspect docker-archive:@(path)))
docker_arch = inspection['Architecture']
docker_os = inspection['Os']
@ -68,8 +53,9 @@ def upload_docker_images(target: DockerTarget, paths: list[Path]):
log.info('Pushing image %s for %s to %s', path, docker_arch, target.registry_path)
# insecure-policy: we don't have any signature policy, we are just uploading an image
skopeo --insecure-policy copy --digestfile @(digest_file) --all docker-archive:@(path) f'docker://{target.registry_path}@@unknown-digest@@'
digest = digest_file.read_text().strip()
skopeo --insecure-policy copy --preserve-digests --all oci-archive:@(tmp_image) f'docker://{target.registry_path}@{digest}'
# skopeo doesn't give us the manifest size directly, so we just ask the registry
metadata = reg.image_info(target.registry_path, digest)