image: publish per-image OCI title and description labels#155
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docker/metadata-action previously derived every label from the repository, so all nine images shared the same generic title and description. Add a top-level description field to each build.yaml (moving variant entries under a variants key), expose it through a new build-config.sh description subcommand, and override the org.opencontainers.image.title/description labels and index annotations with per-image values at publish time. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Rt6cdQY4Q3ie1xpMgyy33S
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Co-authored-by: Claude <noreply@anthropic.com>
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The description field introduced for per-image OCI labels only named the runtime/tool (e.g. "Go toolchain on Debian"), which doesn't convey Dev Container purpose to someone browsing the registry without this repository's context. State that explicitly in every image's description. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Rt6cdQY4Q3ie1xpMgyy33S
docker/metadata-action's labels and annotations are independent inputs (DOCKER_METADATA_ANNOTATIONS_LEVELS only controls where annotations attach, not what feeds them), so the per-image org.opencontainers.image.title/description override only reached the labels output, not the manifest/index annotations actually pushed to the registry via docker/build-push-action's annotations input and imagetools create --annotation. Set the same override on both inputs. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Rt6cdQY4Q3ie1xpMgyy33S
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Summary
docker/metadata-actionpreviously derived every label from the repository, so all nine images shared the same generic title and description.descriptionfield to eachbuild.yaml(moving variant entries under a newvariantskey), expose it through a newbuild-config.sh descriptionsubcommand, and override theorg.opencontainers.image.title/descriptionlabels and index annotations with per-image values at publish time inpublish-image.yml.This PR has no file-level dependency on any other PR in this series and can be merged independently.
Note: #156 (mise bookworm removal) has already been merged into this PR's branch (stacked-PR merge target), so this PR's diff now also includes that change. #157 (README sync) and #158 (checksum pinning) remain based on this branch and will retarget to
mainautomatically once this merges.Test plan
build.yamlfiles and simulatedbuild-config.sh all-matrixoutput locallybuild-checks.ymlandrelease.ymldry-run pass with the new schemabuild.yamldependencies (indentation-agnostic regex managers)