This doesn't seem particularly interesting. Spinning up environments via PRs is nothing new. This just has a fresh coat of paint. Is it neat to pack everything up into a single unit like this? I don't know, maybe.

The most concerning thing here is that you absolutely should not use GitHub fucking Actions as your control plane. Have you ever debugged actions? It's terrible. Old runs magically disappear. The queue sometimes decides to go for a lunch break. Not to mention GitHub's uptime is atrocious.

I'm sorry (not sorry) but I can't take this seriously at all.