feat: publish signed Docker image to GAR on release#7
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Add GoReleaser dockers_v2 config to build and push a minimal scratch-based Docker image to GAR as part of each release. Both release binaries and Docker images are signed with cosign (keyless, via Sigstore) using GoReleaser's signs and docker_signs pipelines. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The google-github-actions/auth step writes a temporary credentials file to the workspace, causing goreleaser to fail with "git is in a dirty state". Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The dockers_v2 feature uses buildx with --push and --attest flags, which require a buildx builder (the default docker driver doesn't support attestations). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
ericnorris
approved these changes
Mar 23, 2026
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Summary
dockers_v2config to build and push a minimal scratch-based Docker image to GAR as part of each releasesignsanddocker_signspipelines.gitignoreso goreleaser doesn't fail with "git is in a dirty state"docker/setup-buildx-actionrequired bydockers_v2for attestation supportTest plan
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