localのときだけServiceProviderを追加

ConfigServiceProvider.php

<?php namespace App\Providers;

use Illuminate\Support\ServiceProvider;

class ConfigServiceProvider extends ServiceProvider
{
    /**
     * Overwrite any vendor / package configuration.
     *
     * This service provider is intended to provide a convenient location for you
     * to overwrite any "vendor" or package configuration that you may want to
     * modify before the application handles the incoming request / command.
     *
     * @return void
     */
    public function register()
    {
        config([
            //
        ]);

        if ($this->app->environment('local')) {
            $this->app->register('Barryvdh\LaravelIdeHelper\IdeHelperServiceProvider');
            $this->app->register('Barryvdh\Debugbar\ServiceProvider');
        }
    }
}