{% assign article_url = page.url | relative_url %}
<figure>
    <img src="/images{{ article_url | remove: '.html' | remove: '/articles' }}--extra-{{ include.id }}.jpg" style="width:100%;">
    <figcaption class="mdc-typography--caption-text">{{ include.caption }} &bull; &copy; {{ include.copyright }}</figcaption>
</figure>