Docker service for generating critical CSS from a URL
Pass website url for which critical css has to be generated as env var to docker-compose
URL=<website-url> docker-compose up
pass the DIMENSIONS env variable if you want to deliver critical CSS for multiple screen resolutions. Defaults to 1300x900 if you don't want.
URL=<website-url> DIMENSIONS="1220x300,1345x500" docker-compose up
Location to save the critical.css file. Defaults to /output/critical.css
URL=<website-url> LOCATION=<your-dir>/critical.css docker-compose up
the location is relative to the current directory.