phpvms/app/Providers/AppServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Support\Facades\Schema;
use Illuminate\Support\ServiceProvider;
use App\Repositories\SettingRepository;
use Illuminate\Database\Eloquent\Relations\Relation;
use App\Models\Flight;
use App\Models\Pirep;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Bootstrap any application services.
     */
    public function boot()
    {
        Schema::defaultStringLength(191);

        Relation::morphMap([
            'flights' => Flight::class,
            'pireps' => Pirep::class,
        ]);

        $this->app->bind('setting', SettingRepository::class);

        //\VaCentral\VaCentral::setVaCentralUrl(config('phpvms.vacentral_api_url'));
        if(!empty(config('phpvms.vacentral_api_key'))) {
            \VaCentral\VaCentral::setApiKey(config('phpvms.vacentral_api_key'));
        }

        # if there's a local.conf.php in the root, then merge that in
        if(file_exists(base_path('config.php'))) {
            $local_conf = include base_path('config.php');
            foreach($local_conf as $namespace => $override_config) {
                $config = $this->app['config']->get($namespace, []);
                $this->app['config']->set(
                    $namespace,
                    array_merge($config, $override_config)
                );
            }
        }
    }

    /**
     * Register any application services.
     */
    public function register()
    {

    }
}