Wrong path in dependency injection, impossible to use custom provider

[minychillo]

In the dependency injection it loads the services.yml like so:

    $loader = new YamlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
    $loader->load('services.yml');

That path is wrong as it is relative to the vendor dir.
So , loadProviders throws an exception as it can not get definition for custom factory service.