PaaS (Platform as a Service)
I'm running Dokku for my PaaS server. While not the most powerful, it can run the Heroku buildpacks & manage routing, which is enough for my needs. Additionally, other solutions I've looked at have a high overhead to set up.
I'm experiementing with running Dokku using Podman instead of Docker. Podman is a daemonless container runtime, which also means I don't need to run containers as root.