Improvements Config/Deployment

[douglasmiranda]

I'm thinking about providing configs for Docker Swarm. We can easily deploy with docker stack command simply using Docker Compose files, but there are some specific things like using Docker Secrets for storing sensitive data that would be best to keep in separate files probably.

I have a Python package that will help with this and could replace django-environ:

• https://github.com/douglasmiranda/gconfigs

And if we need an "automatic Docker Secrets to Environment Variables":

• https://github.com/douglasmiranda/dockerfiles/tree/master/experiments/docker-secrets-as-env

And the easiest way to provide an HTTPS config would be with Caddy, I have something ready for this too:

• https://github.com/douglasmiranda/dockerfiles/tree/master/caddy

Related: #2 #4

[douglasmiranda]

Removing gevent package too, because gunicorn + Nginx/Caddy is just fine, there's no need for gevent.