title: No route matches [GET] /assets/images/header.jpg
body: <p>rails 5.0.0.1</p>
  
  <p>in my css:   </p>
  
  <pre><code>background-image: url('images/header.jpg');
  </code></pre>
  
  <p>file header.jpg place in: app/assets/images/header.jpg</p>
  
  <pre><code>error: No route matches [GET] /assets/images/header.jpg
  </code></pre>
  
  <p>Request URL: (in firefox): <a href="http://localhost:3000/assets/images/header.jpg" rel="nofollow">http://localhost:3000/assets/images/header.jpg</a> 
  Result code: 404</p>
  
  <p>help me </p>