title: Varnish purge using HTTP and REGEX
body: <p>I want to purge Elements of my varnish using HTTP. This http call is triggered from a backend server behind the varnish itself, so the backend server has not other access but HTTP. </p>
  
  <p>I have implemented the following purging rules with the according ACL which work fine for </p>
  
  <pre><code>curl -X PURGE http://www.example.com/image/123/photo-100-150.jpg
  </code></pre>
  
  <p>but I want to be able to purge an URL via HTTP using Regex</p>
  
  <pre><code>curl -X PURGE http://www.example.com/image/123/*.jpg
  </code></pre>
  
  <p>That way I want to clear all scaled version of this image once a new has been uploaded. Is there a way?</p>