build/bake,build: add Chainguard OIDC keyless cgr.dev auth (opt-in)#196
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danilohorta wants to merge 3 commits into
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build/bake,build: add Chainguard OIDC keyless cgr.dev auth (opt-in)#196danilohorta wants to merge 3 commits into
danilohorta wants to merge 3 commits into
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Add four opt-in inputs to bake.yml and build.yml: chainguard-identity, chainguard-registry, chainguard-apk-host, chainguard-libraries-host. When chainguard-identity is set, the build and finalize jobs install chainctl via chainguard-dev/setup-chainctl@v0.5.1 and register it as a Docker credential helper for cgr.dev. The Chainguard pull token is minted inside the build/finalize job runners and never crosses the workflow_call boundary into the caller's registry-auths secret, where it would be silently stripped by GitHub's cross-job output masker (docker#146 documents the equivalent GCP WIF failure mode). No existing input changes; registry-auths continues to handle every static-credential registry as before and can be combined with chainguard-identity for multi-registry builds. Refs: docker#146
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Summary
bake.ymlandbuild.ymlcurrently only accept registry credentials via the staticregistry-authssecret, so any runtime-minted credential (Chainguard OIDC pull token, GCP WIF, AWS OIDC, …) has to be substituted across theworkflow_callboundary, where GitHub's cross-job output masker silently strips values that look like secrets.This PR adds three opt-in inputs (
chainguard-identity,chainguard-apk-host,chainguard-libraries-host) that drivechainguard-dev/setup-chainctl@v0.5.1inside thebuildandfinalizejobs so the Chainguard pull token is minted on the build runner and never leaves it.Issue: #146