func (n ImageName) RegistryURL() string {
	reg := n.Registry
	if reg == "" {
		reg = defaultRegistry
	}
	return fmt.Sprintf("https://%s", reg)
}
func (n ImageName) RegistryURL() string {
	reg := n.Registry
	if reg == "" {
		reg = defaultRegistry
	}
	return fmt.Sprintf("https://%s", reg)
}
// RegistryURL returns the deduced base URL of the registry for this image