I'm trying to use Apache and Node.JS at the same time but it is not working as expected.

// Apache 
  ProxyPreserveHost On
  ProxyRequests Off
  ServerName mydomain.com
  ProxyPass / http://localhost:3000/
  ProxyPassReverse / http://localhost:3000/

And for my server.js

// Node
  const express = require ('express');
  const server = express();

  server.get('/', function(req,res){
    return res.send('The code works fine here');
  });

  server.get('/foo', function(req,res){
    return res.send('Here => Cannot GET /foo');
  });

  server.get('/foo2', function(req,res){
    return res.send('Here too => Cannot GET /foo2');
  });

  server.listen(3000, function() {
    console.log('server is only working for "/" ')
  });

mydomain.com works perfectly, but I cannot find a way to make all the other sub-domains mydomain.com/* to work. Can someone give me a light?