ldc-bogt/app/Providers/AppServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use Illuminate\Http\Request;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {
        //
    }

    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot(Request $request)
    {
        $proxy_url    = env('PROXY_URL');
        $host = $request->getHost();
        if($this->app->environment('dev')) {
            \URL::forceScheme('https');
        } elseif($this->app->environment('production')) {
            \URL::forceRootUrl($proxy_url);
            \URL::forceScheme('https');
        }
    }
}