Scaffold containerized Django/Wagtail app with core features

templates/blog/blocks/callout_block.html

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+<div class="callout icon-{{ value.icon }}">
+  <h3>{{ value.heading }}</h3>
+  {{ value.body }}
+</div>

templates/blog/blocks/code_block.html

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+{% load wagtailcore_tags %}
+<div class="code-block">
+  {% if value.filename %}<div>{{ value.filename }}</div>{% endif %}
+  <pre data-lang="{{ value.language }}"><code class="language-{{ value.language }}">{{ value.raw_code }}</code></pre>
+</div>

templates/blog/blocks/image_block.html

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+{% load wagtailimages_tags %}
+<figure>
+  {% image value.image width-1024 alt=value.alt %}
+  {% if value.caption %}<figcaption>{{ value.caption }}</figcaption>{% endif %}
+</figure>

templates/blog/blocks/pull_quote_block.html

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+<blockquote>
+  <p>{{ value.quote }}</p>
+  {% if value.attribution %}<cite>{{ value.attribution }}</cite>{% endif %}
+</blockquote>