Mount build tools into agent container for hourly-ci-cleaner#7299

pelikhan merged 3 commits intoci-cleaner-workflow-fix-20251222-170956-8501429fb2999733github/gh-aw:ci-cleaner-workflow-fix-20251222-170956-8501429fb2999733from

copilot/sub-pr-7297github/gh-aw:copilot/sub-pr-7297Copy head branch name to clipboard