title: what's Chef cookbook index for?
body: <p>I've been trying to remove all external Chef dependencies from the supermarket and git and it's been good so far except following a line of the log from Chef client.</p>
  
  <pre><code>Fetching cookbook index from https://supermarket.getchef.com...
  </code></pre>
  
  <p>Is there any way I can get the index file and fetch from the local environment? If then where is the file? It seems not to be stored in anywhere.</p>
  
  <p>Thanks for your help!</p>