The codebase behind https://jp.ubuntu.com.
The simplest way to run the site locally is to first install Docker (on Linux you may need to add your user to the docker group), and then use the ./run script:
./runOnce the containers are setup, you can visit http://127.0.0.1:8012 in your browser.
For working on Sass files, you may want to dynamically watch for changes to rebuild the CSS whenever something changes.
To setup the watcher, open a new terminal window and run:
./run watchWith ♥ from Canonical