code: func NewDefaultFactory(opts Options) (Factory, error) {
  	client, err := Create(opts)
  	if err != nil {
  		return nil, err
  	}
  
  	return &defaultFactory{
  		client: client,
  	}, nil
  }
docs: // NewDefaultFactory creates and returns the default client factory that uses
  // github.com/docker/docker client.