title: ignore `assets` folder from ng build --prod
body: <p>I want not to include <code>assets</code> folder in</p>
  
  <blockquote>
    <p>ng build --prod</p>
  </blockquote>
  
  <p>But <code>assets</code> folder shall be available when i am running</p>
  
  <pre><code>ng serve
  </code></pre>
  
  <p>I tried writing as below:</p>
  
  <pre><code>apps:[
     exclude: ["assets"]
  ]
  </code></pre>
  
  <p>But this did not work.
  Tried the solution as below as well</p>
  
  <p><a href="https://github.com/angular/angular-cli/issues/5435" rel="nofollow noreferrer">https://github.com/angular/angular-cli/issues/5435</a></p>
  
  <p>But none of it is working. Any help will be appreciated.</p>