NOTE: THESE ARE INCOMPLETE AND THE STEPS LISTED HERE WILL ABSOLUTELY LEAVE YOU VULNERABLE TO ATTACK. THIS IS WORK IN PROGRESS AS I WORK ON HARDENING THE SERVER
The following are steps to help you configure and run your own Heroku-like server which can support multiple Horizon.io / RethinkDB applications including support for Lets Encrypt (SSL) on Digital Ocean.
Recommend keeping your domain scheme to subdomain.domain.com and no deeper. If you try to go further then it makes Let's Encrypt a little trickier.