code: func (p *Pod) readFile(path string) ([]byte, error) {
  	f, err := p.openFile(path, syscall.O_RDONLY)
  	if err != nil {
  		return nil, err
  	}
  	defer f.Close()
  
  	return ioutil.ReadAll(f)
  }
docs: // readFile reads an entire file from a pod's directory.