After seeing a recent HN post about Dokku, I started going into the nitty gritty of deploying it before finding out there is no multi-node support at all. So if you ever get to the point where you want to scale beyond one server, dokku can't do it which seems like most of the point of using a Heroku-ish tool (I've tried k3s in the past but Kubernetes always seemed like overkill for a non-enterprise setup).

I'll check out dokploy now that I see it has multi-node support.