my changes

webpack.mix.js

@@ -0,0 +1,21 @@
+let mix = require('laravel-mix');
+
+/*
+ |--------------------------------------------------------------------------
+ | Mix Asset Management siehe https://laravel.com/docs/5.5/mix
+ |--------------------------------------------------------------------------
+ |
+ | Mix provides a clean, fluent API for defining some Webpack build steps
+ | for your Laravel application. By default, we are compiling the Sass
+ | file for the application as well as bundling up all the JS files.
+ |
+ */
+// mix.setPublicPath('../');
+
+mix.js('resources/assets/js/lib.js', 'public/js')
+.sass('resources/assets/sass/app1.scss', 'public/css')
+.options({
+    //publicPath: '../'
+    processCssUrls: false
+});
+mix.copy('node_modules/bootstrap-sass/assets/fonts/bootstrap', 'public/fonts/bootstrap');