title: WooCommerce: Get image thumbnail in checkout
body: <p>I want to display the product image in Woocommerce checkout page.
  After some research I found <em><a href="https://stackoverflow.com/questions/52009122/displaying-product-thumbnail-and-attribute-in-woocommerce-cart-and-checkout/52009356#52009356">Displaying product thumbnail and attribute in Woocommerce cart and checkout</a></em> answer code. It works fine., but the images are too heavy. They have the witdh/height of 70px but the original image is way bigger.</p>
  <p>Is there an option to use the WooCommerce thumbnail size <code>gallery_thumbnail_image_width</code>?</p>
  <p>I tried to use the thumbnail size with <code>get_image()</code> like they write in the docs (<a href="https://woocommerce.wp-a2z.org/oik_api/wc_productget_image/" rel="nofollow noreferrer">https://woocommerce.wp-a2z.org/oik_api/wc_productget_image/</a>):</p>
  <pre><code>$thumbnail   = $cart_item['data']-&gt;get_image('gallery_thumbnail_image_width');
  </code></pre>
  <p>But that doesn't work. It's still the bigger image.</p>
  <p>Is there anythin I miss?</p>