Add featured image thumbnail on courses list.

mpcs-featured-image-courses-list.php

<?php if(!defined('ABSPATH')) {die('You are not allowed to call this page directly.');} ?>
<style>
  .mpcs-course-thumbnail {
    vertical-align: middle;
  }

  .grid .col-1-2:last-of-type {
    padding-top: 50px;
  }
</style>
<div class="mp_wrapper">
  <?php foreach($my_courses as $course): ?>
    <div class="grid">
      <div class="col-1-2 grid-pad">
        <?php echo get_the_post_thumbnail( $course->ID, array( 100, 100 ), array( 'class' => 'mpcs-course-thumbnail' ) ); ?>
        <a href="<?php echo get_permalink($course->ID); ?>">
          <?php echo $course->post_title; ?>
        </a>
      </div>
      <div class="col-1-2 grid-pad">
        <?php if($show_bookmark === true): ?>
          <div class="course-progress">
            <div class="user-progress <?php echo $course->user_progress($current_user->ID) == 0 ? 'center-block' : '' ?>" data-value="<?php echo $course->user_progress($current_user->ID); ?>">
            </div>
          </div>
        <?php endif; ?>
      </div>
    </div>
  <?php endforeach; ?>

    <div class="navigation">
      <div class="alignleft">
        <?php previous_posts_link( __('&laquo; Previous', 'memberpress-courses') ); ?>
      </div>
      <div class="alignright">
        <?php next_posts_link( __('Next &raquo;', 'memberpress-courses'), $course_query->max_num_pages); ?>
      </div>
    </div>

</div>