Docker image for compass & sass
COMPASS_VERSION
docker build -t sass-compass:0.12.7 .
docker run -it --rm -v scss-folder:/input -v css-folder:/output sass-compass sass --watch /input:/output
docker run -it --rm -v project-sass-folder:/input -v css-folder:/output sass-compass compass watch /input
docker run -it --rm -v $PWD:/input sass-compass:0.12.7 compass watch /input