plone docker images

Hi all,

I worked a bit more on the docker images for plone 5 and there are
getting slowly to the the first alpha release.
In preparation of that, I tried to register a 'Plone' account on the
docker hub [http://docs.docker.com/userguide/dockerrepos/]
but the site, keeps telling me "A user with that username already exists".

I was not able to find the account in our list of accounts, do you know
maybe who has the password or who created it ?

Cheers,

Sven

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