quay/static/directives/dockerfile-build-form.html

<div class="dockerfile-build-form-element">
  <div class="container" ng-show="building">
    <div class="quay-spinner"></div>
  </div>
  <div class="container" ng-show="uploading">
    <span class="message">Uploading file {{ upload_file }}</span>
    <div class="progress progress-striped active">
      <div class="progress-bar"  role="progressbar" aria-valuenow="{{ upload_progress }}" aria-valuemin="0" aria-valuemax="100" style="{{ 'width: ' + upload_progress + '%' }}">
      </div>
    </div>
  </div>

  <div class="container" ng-show="!uploading && !building">
    <div class="init-description">
      Upload a <b>Dockerfile</b> or an archive (<code>.zip</code> or <code>.tar.gz</code>) containing a Dockerfile <b>in the root directory</b>
    </div>
    <input id="file-drop" class="file-drop" type="file" file-present="internal.hasDockerfile">
  </div>
</div>