zola-theme-terminimal/templates/shortcodes/figure.html

{% if src %}
  {# If the image's URL is internal to the site... #}
  {% if src is not starting_with("http") %}
    {# ... then prepend the site's base URL to the image's URL. #}
    {% set src = get_url(path=page.colocated_path ~ src) %}
  {% endif %}
<figure class="{% if position %}{{ position }}{% else -%} center {%- endif %}">
  <img src="{{ src | safe }}" {% if alt %} alt="{{ alt }}" title="{{ alt }}" {% endif %}{% if style
    %} style="{{ style }}" {% endif %} decoding="async" loading="lazy" />
  {% if caption %}
  <figcaption class="{% if caption_position %}{{ caption_position }}{% else -%} center {%- endif %}" {% if caption_style
    %} style="{{ caption_style | safe }}" {% endif %}>{{ caption | markdown() | safe }}</figcaption>
  {% endif %}
</figure>
{% endif %}