[DNM] Test publishing via GAR#1467
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Changes to test publishing to DockerHub via GAR.
![github-advanced-security[bot]](https://avatars.githubusercontent.com/in/57789?s=60&v=4){kind=small}
Copy-pasta from README.
Add steps to verify the attestation and signature during publishing.
Add missing token for using `gh`.
Cannot verify the image if it isn't there...
Remove `oci://` prefixes.
Enable to test workflow.
Fix incorrect `gar-repository` value.
Otherwise the image isn't there to fetch to attest.
- Add job to wait for mirroring. - Move attestation and signing to after the mirror completes.
Fix permissions after splitting jobs.
Need to push the artifacts to GAR but as docker.io.
Change gar-image to match the name we use in Docker Hub.
Change the subject to (hopefully) match GAR.
Remove the image name from `gar-repository`.
Use the first tag.
- Add explicit `gar-registry`. - Add env values to reduce copy-pasta. - Authenticate with GAR to allow attestation and signing.
Use the repo's name not it's full name for `gar-repository`.
Try `dev` instead of `global`.
Definitely doesn't work.
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martincostello
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Jun 16, 2026
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Changes to test publishing to DockerHub via GAR.