configures production as explained in guides for Heroku

[jaimeiniesta]

Hi! Related to #22 I think I've found the cause, it looks like config/prod.exs needed some attention as per this guide.

[doomspork]

Howdy @jaimeiniesta! 🎉 I think we want some of this PR but not all of it. Some of the production configuration occurs at runtime in the releases.exs file here: https://github.com/elixirschool/school_house/blob/master/config/releases.exs#L17-L25

I had to remove the force_ssl: [rewrite_on: [:x_forwarded_proto]], option because of an issue between Cloudflare, Heroku, and Phoenix. With the current configuration between them all, this option results in an infinite loop redirecting to SSL. (Termination happens before Phoenix).

I'll revisit the Cloudflare rules and see if that's the culprit. Until I can do that we'll need to drop that line.

[jaimeiniesta]

Sounds good to me!

[doomspork]

@jaimeiniesta with this suggested change I think we should be safe to merge. The domain needed to be updated and we can't use the force_ssl option until I can clean up Cloudflare which appears to impact some other things so may take a little more effort.

[jaimeiniesta]

LGTM

[doomspork]

I need to look into Heroku pipelines for testing out PRs. I'll try to carve out time this week or next to do that.