The config_path function returns the fully qualified path to your application's config directory. You may also use the config_path function to generate a fully qualified path to a given file within the application's configuration directory:
<?php $path = config_path();

$path = config_path('app.php');
<?php     public function boot()

    {

        $this->publishes([

            __DIR__.'/../../config/config.php' => config_path('image.php')

        ]);
<?php         $config = __DIR__.'/../../../../imagecache/src/config/config.php';



        $this->publishes([

            $config => config_path('imagecache.php')

        ]);