How to Auto-Renew Let's Encrypt SSL Certificate?

[nelsonic]

We have a few projects which use Let's Encrypt SSL Certificates and I intend to continue using them.

Tasks

• Research, document & implement certificate renewal for:
  • hits.dwyl.io (Debian)
  • ademo.app #43 (Centos)

I feel like this should be a standalone .md file similar to:
https://github.com/dwyl/learn-devops/blob/master/letsencrypt-wildcard-certificate.md

Starting point: https://community.letsencrypt.org/search?q=auto

related to: #43
required by: dwyl/learn-travis#45

[nelsonic]

manually renewed for *.ademo.app (wildcard onlyl)

[nelsonic]

Was: https://hello.ademo.app

Re-deployed:

Now:

Note: this is still not automated! it was just to "unblock" progress on https://github.com/charterindex/application/pull/444