code: func (f *FileResourceLookup) ResolvePath(path, inFile string) string {
  	vs := strings.SplitN(path, ":", 2)
  	if len(vs) == 2 && !filepath.IsAbs(vs[0]) {
  		log.Warnf("Rancher Compose will not resolve relative path %s", vs[0])
  	}
  	return path
  }
docs: // Give a warning rather than resolve relative paths