Nginx Reverse Proxy

Why a reverse proxy?

It sits in front of your apps to handle TLS, load balancing and routing.

server {
  listen 80;
  server_name example.com;
  location / {
    proxy_pass http://app:3000;
    proxy_set_header Host $host;
  }
}

Add TLS with Let's Encrypt and you have a production-ready front door.