Automate reverse proxy configuration

[Ndpnt]

The reverse proxy configuration is currently set up manually by adding specific server blocks to the NGINX configuration, including the subdomain, SSL certificates, and backend port.

To configure the reverse proxy manually:

• Add the following content (and replace subdomain and port placeholder) to the file /etc/nginx/sites-enabled/ota:

server {
  server_name <SUBDOMAIN>.opentermsarchive.org;
  listen 80;

  return 301 http://51.89.227.200$request_uri;
}

server {
  server_name <SUBDOMAIN>.opentermsarchive.org;
  listen 443 ssl http2;

  ssl_certificate /etc/letsencrypt/live/<SUBDOMAIN>.opentermsarchive.org/fullchain.pem;
  ssl_certificate_key /etc/letsencrypt/live/<SUBDOMAIN>.opentermsarchive.org/privkey.pem;
  ssl_session_timeout 1d;
  ssl_protocols TLSv1.2 TLSv1.3;
  ssl_ciphers 'ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256';
  ssl_prefer_server_ciphers on;
  ssl_session_cache shared:SSL:50m;

  location / {
    proxy_pass http://51.89.227.200:<PORT>$request_uri;
  }
}