tree 21585e04a6c415b3ec6aafdd09e687dbd3ddc132
parent e2731e0d940578c9eaca4bfa91ea6420966c6a55
author Tony Liao <tonyliaoss@google.com> 1787782235 -0400
committer Tony Liao <tonyliaoss@google.com> 1787782235 -0400

Add GitHub Actions CI workflow for monolithic container validation

Configure .github/workflows/test_monolithic_container.yml to validate
us-docker.pkg.dev/protobuf-build/containers/test/linux/monolithic:latest-pr199
across the full language test matrix (cpp, java, python, ruby, rust, csharp, php, bazel-all)
on pushes to test/ci-monolithic-* and pull requests.

Authenticate container runner with GAR_SERVICE_ACCOUNT credentials and
pin actions/checkout to immutable commit SHA per Zizmor security policy.