> In a production environment one would probably deploy using something like Fargate, Kubernetes or Fly.io.

Docker swarm mode is pretty good and terribly easy to get up and running in no time.

I have a few small personal projects hosted on Herzner on a couple of Docker swarm mode deployments with 100% uptime in the past two years, and all it took to get that infra up and running is installing Docker on a bare Linux node.

The only downside I'm aware is that inter-node traffic speeds can be relatively low.