punimeister/ruby-compass repository overview

.
├── assets
│   └── scss
│       └── styles.scss
├── config.rb
└── docker-compose.yml

css_dir = "assets/css"
sass_dir = "assets/scss"
output_style = :compressed
line_comments = false

require 'autoprefixer-rails'
on_stylesheet_saved do |file|
  css = File.read(file)
  File.open(file, 'w') do |io|
    io << AutoprefixerRails.process(css)
  end
end

version: '3'

services:

  ruby-compass:
    image: punimeister/ruby-compass
    restart: on-failure
    volumes:
      - ./assets:/app/assets
      - ./config.rb:/app/config.rb:ro