title: Do AMP-HTML pages have to load the JavaScript library from ampproject.org?
body: <p>The documentation states that <strong>AMP HTML documents MUST</strong></p>
  
  <ul>
  <li>Contain a <code>&lt;script async src="https://cdn.ampproject.org/v0.js"&gt;&lt;/script&gt;</code> tag as the last element in their head (this includes and loads the AMP JS library).</li>
  </ul>
  
  <p>Does this actually mean that i can't serve an internal copy of this file (e.g. for use in a restricted network environment without internet access)?</p>