Cloudron has no icon on fontawesome.
I just noticed this.
It is a matter of branding, so somebody sensible ought to manage this, if it is to be accomplished at all. (Lets Go Brandon!)
I noticed this thanks to the linkin thread, which is an application to generate linktree like lists.
Ha funny, I had the same issue when trying to add Cloudron link on https://forum.cloudron.io/topic/6855/linkin-a-customizable-self-hosted-link-tree-platform and ended up with
Having it upstream fontawesome would be quite an achievement But https://github.com/mlwilkerson/fa-custom-icon-demo has a demo on adding custom icons inside a custom app.