I don't see anything of substance on this post. There is no explanation on how it was done.
Vercel and Netlify charge 10,000x for a pretty UI and not much else. Their closed source nature even makes automation harder.
I'm hopeful we'll have a stack to give us the same experience and deploy to any provider soon.
Aside, deploying to GitHub pages is definitely neat and fast AF of your site is hot/active... Otherwise first load can take a few seconds.