Propshaft with FontAwesome

1. Download FontAwesome https://fontawesome.com/download

2. Vendor all.min.css and the webfonts
   

   vendor/assets/
   ├── stylesheets/
   │   └── all.min.css
   ├── webfonts/
   │   └── fa-solid-900.woff2
   |   └── etc.
   

3. Probably rename all.min.css to fontawesome.min.css

4. Delete references to ../webfonts/ in the css file (noting rails assets:reveal)

5. Now add <%= stylesheet_link_tag "fontawesome.min.css", "data-turbo-track": "reload" %> to layouts/application.html.erb