- Dockerfile, Dockerfile.fpm: select rhel$releasever-<amd64|aarch64> from uname -m (amd64 file is byte-identical; $basearch cannot be used, x86_64 path 404s). - scripts/lsphp-repo-version.sh replaces three inline binary-amd64 lookups (build-push.yaml x2, lsphp-source-emergency.yaml); arch defaults to amd64. - fixture test wired into Shell-Checks. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0185ukXjXyosSkunDsdWz3mb