Apache2 Reverse Proxy (http)

example.conf

<VirtualHost *:80>
  ServerName example.com
  ServerAdmin hello@example.com

  ProxyRequests Off
  ProxyPreserveHost On

  <Proxy *>
    Order deny,allow
    Allow from all
  </Proxy>

  <Location />
    Require all granted

    ProxyPass http://localhost:3000/
    ProxyPassReverse http://localhost:3000/
  </Location>

  ErrorLog  /var/www/example.com/logs/error.log
  CustomLog /var/www/example.com/logs/access.log combined

</VirtualHost>