docker/tarfile/src.go
func (s *Source) Close() error {
	if s.removeTarPathOnClose {
		return os.Remove(s.tarPath)
	}
	return nil
}
func (s *Source) Close() error {
	if s.removeTarPathOnClose {
		return os.Remove(s.tarPath)
	}
	return nil
}
// Close removes resources associated with an initialized Source, if any.