HTTPS Setup

VR uses Letsencrypt.

As the system is rather dated, I had to use a workaround to install an older version of certbot-auto.

https://github.com/certbot/certbot/issues/6824#issuecomment-470440436

⚠️ This means certbot-auto MUST only run with --no-self-upgrade! ⚠️

Note: Faye (running on port 9292) also needs the cert. Therefore I copied it to /home/app/app/shared/config. And updated the configuration in /home/app/app/current/config/faye_thin.yml.