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Zuul Registry

This is a container image registry for use with the Zuul project gating system.

The defining feature of this registry is support for shadowing images: it allows you to upload a local version of an image to use instead of an upstream version. If you pull an image from this registry, it will provide the local version if it exists, or the upstream if it does not.

This makes it suitable for use in a Zuul-driven speculative image pipeline.

The latest documentation for Zuul is published at: https://zuul-ci.org/docs/

Getting Help

There are two Zuul-related mailing lists:


A low-traffic announcement-only list to which every Zuul operator or power-user should subscribe.


General discussion about Zuul, including questions about how to use it, and future development.

You will also find Zuul developers in the #zuul channel on Freenode IRC.


To browse the latest code, see: https://opendev.org/zuul/zuul-registry To clone the latest code, use git clone https://opendev.org/zuul/zuul-registry

Bugs are handled at: https://storyboard.openstack.org/#!/project/zuul/zuul-registry

Suspected security vulnerabilities are most appreciated if first reported privately following any of the supported mechanisms described at https://zuul-ci.org/docs/zuul/user/vulnerabilities.html

Code reviews are handled by gerrit at https://review.opendev.org

After creating a Gerrit account, use git review to submit patches. Example:

# Do your commits
$ git review
# Enter your username if prompted

Join #zuul on Freenode to discuss development or usage.


Zuul-registry is free software licensed under the General Public License, version 3.0.

Python Version Support

Zuul requires Python 3. It does not support Python 2.