Single npub <-> fediverse account self-hosting

I'd like to self-host a Mostr instance on my own domain to exclusively relay my own npub.

This has the advantage of avoiding global blocks for mostr.pub. Although Fediverse admins could just block my domain as well, they might be less inclined to do so if it's just one person.

In addition I'd like to be set up a short alias for my npub, so to the Fediverse I would just be @sjors@sprovoost.nl (like I was back in the day I self hosted a Mastodon instance).

A project like Umbrel could turn this into a one-click install, so anyone can easily create their own fediverse presence without having to run all of Mastodon. Hopefully just matter of adding a DNS record once and then forget about it.

I might take a stab at implementing it myself.