- Change release-name to release_name (underscores instead of hyphens)
- Update CI workflow to use release_name build arg
- Fixes Docker build error: buildpack-deps:name not found
- Docker now properly resolves to buildpack-deps:unstable
- Add ARG release-name=unstable before FROM statement
- Use name syntax for proper variable substitution
- Fixes Docker build error: invalid reference format
- Docker build now properly resolves buildpack-deps:unstable