code: func FnFindImage(client *docker.Client, imageName string) (image docker.APIImages, err error) {
  	var imgs []docker.APIImages
  	imgs, err = client.ListImages(docker.ListImagesOptions{Filter: imageName})
  	if err != nil {
  		return
  	}
  	if len(imgs) == 0 {
  		err = ErrImageNotFound
  		return
  	}
  	image = imgs[0]
  	return
  }
docs: // FnFindImage returns image data by name