I'm going to use this post to help me add commento.
This should add a postgres db server. I'll make the password private later. I don't really care about it being public as you'd have to get into the docker appnet network first.
This adds a commento container reverse proxied with nginx.
I think there is a bug with subdirectories so I've put it on port 5005.
This is a shame because now you need the full url to the commento service when embedding it in a theme.
These comments are embedded in the ghost container at /var/lib/ghost/content/themes/casper/post.hbs
<section class="post-full-comments">
<div id="commento"></div>
<script src="https://sigyl.com:5005/js/commento.js"></script>
</section>