return nil, nil
	}
}

func extract(gzipStream io.Reader, destination string) error {
	uncompressedStream, err := gzip.NewReader(gzipStream)
	if err != nil {
		return fmt.Errorf("create gzip reader: %v", err)
	}

	tarReader := tar.NewReader(uncompressedStream)

	for {
		header, err := tarReader.Next()
		if err == io.EOF {
			break
		}
		if err != nil {