app/templates/parts/sell_image_uploader.html

<section class="section is-paddingless">
  <div class="container">
    <br>
     <input type="file" class="filepond">
    <script src="https://unpkg.com/filepond-plugin-image-preview/dist/filepond-plugin-image-preview.js"></script>
    <script src="https://unpkg.com/filepond/dist/filepond.js"></script> 
    <script src="/static/enableFilepond.js"></script> 
  </div>
</section>