I would love to see more examples that get away from web dev with Elixir. While it's great with the Phoenix framework there is so much more to Elixir than that. Trying to deploy an elixir daemon has been a pain and I haven't found much around that. There is escript and distillery and while I haven't tried distillery for non-phoenix apps, escript works but deploying is still a pain.
Since the project I'm working on is open source, you can see how I've done it. It's still far from perfect but maybe it could be a place to start.
Elixir app is on https://github.com/hackerexperience/helix. You'd probably be interested on `lib/release.ex` and `rel/`.
For the ci, our infrastructure playbooks are at https://github.com/hackerexperience/infrastructure, and you probably want to look at `roles/{helix, erlang, elixir}`.
Hit me up if you have questions our would like to discuss further. Email is on profile.
Btw, here's a great presentation about the topic: https://youtube.com/watch?v=H686MDn4Lo8
We spent some time with friend doing research and trying to connect all pieces to make it work.