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It looks like further down that page - they have an example url on how to do this using the ImageRegistry type =
```Docker registry server URL to push to. Some common values include: DockerHub: <http://docker.io|docker.io> or <https://index.docker.io/v1> Azure Container Registry: &lt;name&gt;.<http://azurecr.io|azurecr.io> AWS Elastic Container Registry: &lt;account&gt;.<http://dkr.ecr.us-east-2.amazonaws.com|dkr.ecr.us-east-2.amazonaws.com> Google Container Registry: &lt;name&gt;.gcr.io.```