Webpack: css not loading in production

[tvld]

Production site loads without css, but during dev all is perfect.
Investigation:
npm run dev, all works great,
npm run build, show that ./dist/static/css contains the app.xxx.css and the page has a to that file, but still no css loads from it. Might it be my Nginx con

[tvld]

Was an Nginx issue, not Webpack's. All files were there but my Nginx conf file was missing:

http {
  default_type application/octet-stream;
  include  /etc/nginx/mime.types;
 [...]
}

Sorry to bother here...