title: Gif images don't play in Microsoft Teams
body: <p>I'm using the following code to display a gif image as an attachment in my reply:</p>
  
  <pre><code>    Activity replyToConversation = (Activity)context.MakeMessage();
      replyToConversation.Attachments = new List&lt;Attachment&gt;();
      replyToConversation.Attachments.Add(new Attachment()
      {
         ContentUrl = "http://i.giphy.com/p3BDz27c5RlIs.gif",
         ContentType = "image/gif"
      });
  
      await context.PostAsync(replyToConversation);
      context.Wait(MessageReceivedAsync);
  </code></pre>
  
  <p>In the Web Chat channel it displays (and play) as expected, but for some reason it displays as a static image in the Microsoft Teams channel.</p>
  
  <p>Please, any ideas?</p>