code: func FnFindContainer(client *docker.Client, imageName string) (container docker.APIContainers, err error) {
  	var containers []docker.APIContainers
  	containers, err = client.ListContainers(docker.ListContainersOptions{All: true})
  	if err != nil {
  		return
  	}
  
  	if !strings.HasPrefix(imageName, "gofn") {
  		imageName = "gofn/" + imageName
  	}
  
  	for _, v := range containers {
  		if v.Image == imageName {
  			container = v
  			return
  		}
  	}
  	err = ErrContainerNotFound
  	return
  }
docs: // FnFindContainer return container by image name