Investigate hosting the app on Heroku

[kylerippey]

We should see if we can host the app on Heroku, having a domain like http://tanx.herokuapp.com/ would be nice.

Here's a buildpack that might be useful: https://github.com/hashnuke/heroku-buildpack-elixir

[dazuma]

As an FYI, I tried deploying to Google App Engine (e.g. *.appspot.com) but discovered that App Engine doesn't support websockets by itself. (It may be possible to get Google Managed VMs to accept websockets, but we'd probably not be able to use the appspot.com domain.) So for now we're probably stuck with Container Engine (i.e. Kubernetes) on Google's cloud. It will be good to see whether Heroku supports websockets.

[BKStephens]

https://blog.heroku.com/archives/2014/7/7/websockets_now_ga
https://devcenter.heroku.com/articles/websockets