sites-available/example.com

example.com

server {
  listen 80;
  server_name example.com;
  rewrite ^(.+?)/?$ http://www.example.com$1 permanent;
}

server {
  listen 80;
  server_name www.example.com;
  root /var/www/example.com/public_html;

  location / {
    try_files $uri @MYCLOJUREAPP;
  }

  location @MYCLOJUREAPP {
    proxy_pass http://localhost:3000;
  }

}