It seems similar to https://swarmlet.dev as well (I’m the author). I’ve since abandoned the project for different reasons. Currently I’m using Dokku, and have been using it for ~8 years. It’s a lovely project and pretty mature. I would recommend Dokku to anyone who wants to do (cheap) self-hosting!
Same here: I've been hosting two dozen services on Dokku for a side-project in the past few years and it's been working flawlessly!
Dokku and a Hetzner server makes hosting very easy
