[tptacek]

The document you cited (I wrote it!) is entirely about the different ways to run multiple processes in 1 VM.

There's no reason I can see why you couldn't run a VM that itself ran Docker, and have docker-compose run at startup. I wouldn't recommend it? It's kind of a lot of mechanism for a simple problem. I'd just use a process supervisor instead. But you could do it, and maybe I'm wrong and docker-compose is good for this.

What you can't do is use docker-compose to boot up a bunch of different containers in different VMs on Fly.io.

[nicoburns]

I think docker-compose is pretty good at this. One advantage is that you get a development environment and a production setup in a singe config file.

I feel like this setup might make quite a lot of sense if you have a bunch of micro services that are small enough that they can share resources.