code: func (c *Container) Port(ctx context.Context, port string) (string, error) {
  	if bindings, ok := c.container.NetworkSettings.Ports[nat.Port(port)]; ok {
  		result := []string{}
  		for _, binding := range bindings {
  			result = append(result, binding.HostIP+":"+binding.HostPort)
  		}
  
  		return strings.Join(result, "\n"), nil
  	}
  	return "", nil
  }
docs: // Port returns the host port the specified port is mapped on.