Add org.opencontainers.image.title annotation to attestation layers #4498
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #4498 +/- ##
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- Coverage 40.10% 36.76% -3.35%
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Files 155 220 +65
Lines 10044 12119 +2075
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+ Hits 4028 4455 +427
- Misses 5530 6976 +1446
- Partials 486 688 +202 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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Add the org.opencontainers.image.title annotation to layer descriptors
in attestation manifests to enable tools like 'oras pull' to download
attestation bundles with meaningful, collision-free filenames.
The annotation format is {algorithm}-{hex}.sigstore.json where the
hyphen separator ensures cross-platform filename compatibility,
particularly for Windows which forbids colons in filenames.
Changes:
- Add Annotations field to layer descriptors in WriteReferrer
- Update tests to verify annotation is set correctly
- Document the optional layer annotation in BUNDLE_SPEC.md
Fixes sigstore#4497
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <[email protected]>
Signed-off-by: Ralph Bean <[email protected]>
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Summary
This adds the
org.opencontainers.image.titleannotation to layer descriptors in attestation manifests to enable tools like 'oras pull' to download attestation bundles with collision-free filenames.The annotation format is {algorithm}-{hex}.sigstore.json where the hyphen separator ensures cross-platform filename compatibility, particularly for Windows which forbids colons in filenames.
Changes:
Fixes #4497
🤖 Generated with Claude Code
Release Note
Added org.opencontainers.image.title annotation to attestation layers, enabling oras pull to save bundles locally.
Documentation
I don't believe that a documentation update beyond the update to the bundle spec here is required.