title: Node build command not working
body: <p>I am using this config in package.json file for running webpack dev server. I want to use a build command as well, but its not working for me</p>
  
  <pre><code>{
    "name": "Demo",
    "version": "1.0.0",
    "description": "Demo App",
    "main": "index.js",
    "scripts": {
      "start": "webpack-dev-server --hot",
      "build": "webpack --watch"
  },
  </code></pre>
  
  <p><code>npm start</code> command works fine, but build isn't</p>