func getContainerTemplatePath(c container, filename string) (string, error) {
	if strings.Contains(filename, "/") {
		return "", fmt.Errorf("Invalid template filename")
	}

	return filepath.Join(c.Path(), "templates", filename), nil
}
func getContainerTemplatePath(c container, filename string) (string, error) {
	if strings.Contains(filename, "/") {
		return "", fmt.Errorf("Invalid template filename")
	}

	return filepath.Join(c.Path(), "templates", filename), nil
}
// Return the full path of a container template.