If you are using our Nomad or Kubernetes plugins, you can also run the apps on servers other than the one you are building on.
https://pypi.org/project/docker-harbormaster
It's great if you want to run generic utilities at home (though I've used it at work in internal production and it was good), but it doesn't do ingress, so you have to bring your own.
It's basically a fancy/opinionated wrapper over "git pull && docker-compose up", with allowing you to specify all configuration in one file/repo.
Dokku does support both Kubernetes and Nomad as deployment targets, so it's not strictly single-server (though app builds currently are).