func (s *Image) Exists() bool {
	out, err := s.docker.Run("images", "--no-trunc")
	if err != nil {
		return false
	}

	return strings.Contains(out, s.name)
}
func (s *Image) Exists() bool {
	out, err := s.docker.Run("images", "--no-trunc")
	if err != nil {
		return false
	}

	return strings.Contains(out, s.name)
}
// Exists check whether current Docker image is available.