const express = require('express')
const app = express()

app.get('/', function (req, res) {
  res.send('Hello World!')
})

app.listen(3000, function () {
  console.log('Server listening on port 3000!')
})
@@ -128,20 +128,32 @@
 .listen(
-3000
+process.env.PORT
 , functi
@@ -174,17 +174,17 @@
 ole.log(
-'
+%60
 Server l
@@ -204,14 +204,29 @@
 ort 
-3000!'
+$%7Bprocess.env.PORT%7D!%60
 )%0A%7D)

Update to dynamic PORT