Package docker provides a general type to represent any way of referencing images within the registry.

Parse parses the string into a structured ref.

SplitObject provides two parts of the object spec, delimited by an `@` symbol.

ErrHostnameRequired is returned when the hostname is required.

ErrInvalid is returned when there is an invalid reference.

ErrObjectRequired is returned when the object is required.

Spec defines the main components of a reference specification.