laravel5.3 bootstrap-sassでglyphiconsが読み込めない対応

laravel5.3の環境になります。

デフォルトのgulpfileに以下を追加

.copy('node_modules/bootstrap-sass/assets/fonts/bootstrap/','public/fonts/bootstrap')

全体的にはこんな感じ

const elixir = require('laravel-elixir');

require('laravel-elixir-vue-2');

/*
 |--------------------------------------------------------------------------
 | Elixir Asset Management
 |--------------------------------------------------------------------------
 |
 | Elixir provides a clean, fluent API for defining some basic Gulp tasks
 | for your Laravel application. By default, we are compiling the Sass
 | file for our application, as well as publishing vendor resources.
 |
 */

elixir(mix => {
    mix.sass('index.scss')
        .copy('node_modules/bootstrap-sass/assets/fonts/bootstrap/','public/fonts/bootstrap')
        .webpack('app.js');
});