PostCSS-cli not working in watch mode in docker image.

npm install

npm run build : builds public/global.css

npm run dev : builds public/global.css and watches for change

You can set the command inside the docker-compose.yml (command that is executed at the start of the container) and then run:

docker-compose up -d

2 behaviors depending on the command you set:

npm run build : builds public/global.css

npm run dev : does not do anything and doesn't watch for changes.