Add support for OCI Image Manifest #261
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As a follow up, I am happy to revive #244 if @luizribeiro can't get to it. |
Previously, a generic error would be returned: ``` Error: unexpected HTTP status 404 Not Found ``` This does not convey much information as to what happens. On the current version of dkregistry, one would hit this when trying to access s390x/ubuntu on registry-1.docker.io. This change specializes the error to surface more information as to why the error is happening as described in the OCI Distribution Specification: https://github.com/opencontainers/distribution-spec/blob/main/spec.md#error-codes In this specific case, the error would look like: ``` Error: Api Error: ((MANIFEST_UNKNOWN), message: OCI manifest found, but accept header does not support OCI manifests) Caused by: ((MANIFEST_UNKNOWN), message: OCI manifest found, but accept header does not support OCI manifests) ``` which clearly highlight that dkregistry does not support OCI manifest.
Image like s390x/ubuntu uses OCI Image Manifest, which per https://github.com/opencontainers/image-spec/blob/v1.0.1/manifest.md is very similar to vnd.docker.distribution.manifest.v2. Add a test to confirm we can deserialize an OCI Image Manifest as a ManifestSchema2Spec. Also add a test to confirm that we can now fetch the manifest from docker.io. Previously it would fail with MANIFEST_UNKNOWN.
OCI Image Index (https://github.com/opencontainers/image-spec/blob/v1.0.1/image-index.md) is similar to vnd.docker.distribution.manifest.list.v2 This revives camallo#244 originally created by @luizribeiro A testing client could pull koenkk/zigbee2mqtt:latest with this change. Fixes camallo#243
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@PratikMahajan if you could look into this one too, that would be great. |
PratikMahajan
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May 28, 2024
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Image like s390x/ubuntu uses OCI Image Manifest, which per
https://github.com/opencontainers/image-spec/blob/v1.0.1/manifest.md
is very similar to vnd.docker.distribution.manifest.v2.
Add a test to confirm we can deserialize an OCI Image Manifest as a ManifestSchema2Spec.
Also add a test to confirm that we can now fetch the manifest from docker.io.
Previously it would fail with MANIFEST_UNKNOWN.
This is built on top of #260 . I stacked it because it would otherwise have merge conflicts due to the tests.