I’m thinking of creating an OSS app that I want to make it as easy for others to host as possible. I always remember seeing the “Deploy to Heroku” buttons around that would aid in that by deploying the app, setting up a database and volumes, and starting the server.
We have some good things coming out next and with that, there’s also a feature that might be exactly what you want but spoilers aside those are not released yet.
We are not likely to ship a button any time soon. We’ve done some experiments with quick launchers of different apps, and so far we think our efforts are better spent elsewhere.