Setting Node.js Port for bluehost server – CPanel

I’m trying to deploy a node.js and express website on my bluehost VPS via cpanel, but although the git repo is deployed, and the app is registered via the application manager, and npm dependencies are ensured
when going to the URL the only thing you can see is 2 of the files from my public_html node_modules and views — but the rest of the git repo doesn’t show.

I have a feeling that the right port isn’t being set in my app.js as I think the cpanel.yml file is correct. I’m thinking it’s still just trying to connect to 3000 perhaps? Any help would be great.

The app.js is as follows:

// //jshint eversion:6

const http = require('http')
const express = require("express");
const bodyParser = require("body-parser")

const ejs = require('ejs');
const nodemailer = require('nodemailer');
const hostname = '127.0.0.1';
const path = require('path');
const port = 3000;


const app = express();


app.set("view engine", "ejs");
app.use(bodyParser.urlencoded({
    extended: false
}));
app.use(express.json());



// custom middleware to log data access
const log = function (request, response, next) {
    console.log(`${new Date()}: ${request.protocol}://${request.get('host')}${request.originalUrl}`);
    console.log(request.body); // make sure JSON middleware is loaded first
    next();
}
app.use(log);
// end custom middleware


app.use(express.static('public'));
app.use(express.static('images'));



app.get("/", function (req, res) {
    res.render("index");
});

app.get("/prices", function (req, res, ) {
    res.render("prices");
});

app.get("/about", function (req, res, ) {
    res.render("about");
});
app.get("/contact", function (req, res, ) {
    res.render("contact");
});

module.exports = function () {
    this.Categories = require('tools.js');
}



// HTTP POST
app.post("/ajax/email", function (request, response) {
    // create reusable transporter object using the default SMTP transport
    const transporter = nodemailer.createTransport({
        host: "smtp.gmail.com",
        port: 465,
        secure: true,
        auth: {
            user: "[email protected]", // this should be YOUR GMAIL account
            pass: "xxxx" // this should be your password
        }
    });

    var textBody = `FROM: ${request.body.fname}  EMAIL: ${request.body.email} MESSAGE: ${request.body.comment}`;
    var htmlBody = `<h2>Mail From Contact Form</h2> <p>From: ${request.body.fname} ${request.body.lname} </p> <p> Email: ${request.body.email}</p> <p> Phone Number: ${request.body.phone}</p> <p> Company: ${request.body.company}</p><p>Comment: ${request.body.comment}</p>`;
    var mail = {
        from: "xxx", // sender address
        to: "XXX", // list of receivers (THIS COULD BE A DIFFERENT ADDRESS or ADDRESSES SEPARATED BY COMMAS)
        subject: "Mail From Contact Form", // Subject line
        text: textBody,
        html: htmlBody
    };

    // send mail with defined transport object
    transporter.sendMail(mail, function (err, info) {
        if (err) {
            console.log(err);
            response.json({
                message: "message not sent: an error occured; check the server's console log"
            });
        } 
    });
});


const PORT = process.env || port;


const server = http.createServer((req, res) => {
    res.statusCode = 200;
    res.setHeader('Content-Type', 'text/plain');
    res.end('Hello World! NodeJS n');
});

app.listen(port, hostname, () => {
    console.log(`Server running at http://${hostname}:${port}/`);
});

cpanel.yml

       ---
deployment:
 tasks:
 - export DEPLOYPATH=/home/deltade4/public_html
 - /bin/cp -r /home/deltade4/repositories/DeltaDesigns22 $DEPLOYPATH
 - /bin/cp -R node_modules $DEPLOYPATH
 - /bin/cp -R views $DEPLOYPATH
 - /bin/cp -R images $DEPLOYPATH
 - /bin/cp -R css $DEPLOYPATH
 - /bin/cp app.js $DEPLOYPATH
 - /bin/cp package.json $DEPLOYPATH
 - /bin/cp package-lock.json $DEPLOYPATH