Simple Nginx reverse proxy

nginx-reverse-proxy.conf

server {  
  listen 80;
  server_name myapp.org;
  error_log /var/log/nginx/myapp.error.log warn;

  client_max_body_size 50M;
	
  location / {
    proxy_pass http://localhost:3000;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_buffers 4 256k;
    proxy_buffer_size 128k;
    proxy_busy_buffers_size 256k;
  }
}