Updated to use node inspector & fix issue with debug not attaching

https://nodejs.org/en/docs/inspector/
Note that 0.0.0.0: came from microsoft/vscode#22306

Author: Pistulls

developer-tools/nodejs-debugging/app/app.js

@@ -1,5 +1,5 @@
 var express = require('express');
-var expressHandlebars  = require('express-handlebars');
+var expressHandlebars = require('express-handlebars');
 var http = require('http');
 
 var PORT = 8000;

developer-tools/nodejs-debugging/app/docker-compose.yml

@@ -3,7 +3,7 @@ version: "2"
 services:
   web:
     build: .
-    command: nodemon --debug=5858
+    command: nodemon --inspect=0.0.0.0:5858
     volumes:
       - .:/code
     ports: