Artisan Command Call

I have created one module, in that module I have one config.php file. When I call php artisan vendor:publish in my terminal it is copying from my module to app/config, Working fine.

But when i call \Artisan::call('vendor:publish'); it return null. My code is

\Artisan::call('vendor:publish');
dd(\Config::get('seller'));

but it return null

via Chebli Mohamed