[mdaniel]

RunMe[1] seems like it is what you're looking for: https://docs.runme.dev/usage/run-tag

1: https://github.com/stateful/runme#runme-runs-markdown-- (Apache 2, golang)

I wondered why Runme wasn't already mentioned but it seems the comment got nested under a dead thread https://news.ycombinator.com/item?id=41955834