I described a workflow to use dokku in Ubuntu VMs and some basic hints on how to host a Rails app on top of this. The app can make full use of postgres, persistent storage (e.g. for file uploads) and two-and-a-half-lines-of-code SSL support (letsencrypt). I find the little tools around that setup real fun to work with. Find the article at http://fwolfst.github.io/docker/dokku/dokku-alt/virtualization/2016/04/18/dokku-on-ubuntu-vm-complete-rails.html . It might still be rough at the edges, feedback more than welcome!