Fixed caching thread gallery with different hosts

boards/templates/boards/thread_gallery.html

@@ -15,7 +15,7 b''
 
     <script src="{% static 'js/thread.js' %}"></script>
 
-    {% cache 600 thread_gallery_view thread.id thread.last_edit_time LANGUAGE_CODE %}
+    {% cache 600 thread_gallery_view thread.id thread.last_edit_time LANGUAGE_CODE request.get_host %}
     <div class="image-mode-tab">
         <a href="{% url 'thread' thread.get_opening_post.id %}">{% trans 'Normal mode' %}</a>,
         <a class="current_mode" href="{% url 'thread_mode' thread.get_opening_post.id 'gallery' %}">{% trans 'Gallery mode' %}</a>