DL4000 Maintainer not recognised correctly

[afternoon]

A DL4000 (specify maintainer) error is displayed for the following Dockerfile, despite a maintainer field being present. Changing email doesn't make any difference.

FROM python
MAINTAINER Ben Godfrey <foo@example.com>

In fact the example from the DL4000 wiki page also fails:

FROM busybox
MAINTAINER Lukas Martinelli <me@lukasmartinelli.ch>

[afternoon]

Looking through the code, I can't see any obvious reason why this wouldn't work.

[lukasmartinelli]

It was a bad one. Parser fail. Because of the @ in the email
the parser tried to match a digested docker base image FROM <image>@<digest>.
And therefore there was no Maintainer but a DigestedImage in the AST.

Thanks for noticing.

[afternoon]

Of course! Awesome. Thanks!