New flags on stamp-build.py (and forwarded by build-standalone.py):
  --version --sha --commit --date

Environment variables (same precedence as flags):
  VMO_DOCS_VERSION  VMO_DOCS_SHA  VMO_DOCS_COMMIT  VMO_DOCS_DATE

Precedence per field: CLI flag > env var > git introspection > 'unknown'.
Git auto-computation stays the local-dev default when nothing is passed.

Jenkins pipeline recipe added to README, e.g.:
  python3 build-standalone.py --version ${BUILD_NUMBER}