Restructure the Dockerfile and the CSS/JS files so that we only rebuild the CSS and JS when they change, not on every commit. Before it took several minutes to rebuild the Docker image after every commit, even when the JS/CSS files didn't change. This also made pulling images slower. This requires refactoring the CSS and JS to not use embedded Ruby (ERB) templates, since this made the CSS and JS dependent on the Ruby codebase, which is why we had to rebuild the assets after every Ruby change.
Config
This directory contains configuration files for Danbooru.
To configure your Danbooru instance, copy danbooru_default_config.rb to danbooru_local_config.rb and edit it. See danbooru_default_config.rb for details.
The only file here that end users need to be concerned about is danbooru_default_config.rb. The rest of the files here are internal Rails-related configuration files that end users shouldn't need to edit.