func IsImageMatched(s, t string) bool
IsImageMatched returns true if the value of t is identical to the image name in the full image name and tag as given by s.
func Split(imageName string) (name string, tag string, digest string)
Split separates and returns the name and tag parts from the image string using either colon `:` or at `@` separators. image reference pattern: [[host[:port]/]component/]component[:tag][@digest]