code: func parseStorageOpts(storageOpts []string) (map[string]string, error) {
  	m := make(map[string]string)
  	for _, option := range storageOpts {
  		if strings.Contains(option, "=") {
  			opt := strings.SplitN(option, "=", 2)
  			m[opt[0]] = opt[1]
  		} else {
  			return nil, errors.Errorf("invalid storage option")
  		}
  	}
  	return m, nil
  }
docs: // parses storage options per container into a map