title: Drupal 8 - slide show exposing image alt text as a caption
body: <p>I have a block view which shows the image caroseul - but I want to expose the image alt text and use it as a caption</p>
  
  <p><a href="https://i.stack.imgur.com/eHVUi.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/eHVUi.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/pSGta.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/pSGta.png" alt="enter image description here"></a></p>
  
  <p>what would be the replacement pattern?</p>
  
  <p>{{file:field_alt_text}}?</p>
  
  <p>{{field_images_alt_text}} ?</p>