One of my favorite things (at least for personal projects) about using the cloud is so-called "platform as a service" systems like Heroku, where I don't have to get down in the weeds, I just push code and the process starts (or restarts).

Is there something like that I could use on my own hardware? I just want to do a fresh Linux install, install this one package, and start pushing code from elsewhere, no other configuration or setup necessary. If it can accept multiple repos, one server process each, all the better. I know things like Docker and Kubernetes exist but what I want is absolute minimal setup and maintenance.

Does such a thing exist?