Bugfix: Issue #10527 (DockerImageName fails to check compatibility if digest is present)

[mantis-sa]

Fixes Issue #10527 (https://github.com/testcontainers/testcontainers-java/issues/10527)

The following forms are now also supported (as per the DockerImageName.parse() method):

• fooReg.registry/library/foo:tag
• fooReg.registry/library/foo@sha256:X

where the following must be true about the string passed through:

• foo is always mandatory
• @sha256:X and :tag is always optional.
• fooReg.registry is always optional
• library is always optional except for when fooReg.registry is present