Nginx Config

server {
  listen 80;
  server_name example.com www.example.com;
  return 301 https://$host$request_uri;
}

server {
  listen 443 ssl http2;
  server_name example.com www.example.com;
  ssl_certificate     /etc/letsencrypt/live/example.com/fullchain.pem;
  ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
  gzip on;
  gzip_types text/plain text/css application/json application/javascript;
  location / {
    proxy_pass http://127.0.0.1:3000;
    proxy_http_version 1.1;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
  }
}