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CERN Registry

The official production registry is hosted by

This page documents an experimental registry fully OCI compliant, available at

The official Harbor documentation can be found here.

DockerHub Cache (under testing)

A proxy cache is available to, which should offer a lower latency and higher bandwidth option for workloads running inside CERN. To use it, prefix the image with, so:

docker pull myrepo/myimage:mytag becomes

A special case are the default images, where you need to prefix with library, so:

docker pull ubuntu:20.04 becomes docker pull


By default newly created repositories have a limited quota of 5GB. If you need more space please open a Service Desk ticket.