Switch to Staffbase Artifactory as new default docker registry

[kaitimmer]

Type of Change

• Enhancement / new feature

Description

This switches the default registry from registry.staffbase.com to staffbase.jfrog.io which is our new prefered way of releasing images.

The idea would be to release a new version of this action and have repositories switch gradually.

When updating there is also the need to switch the following:

• docker-image -> replace /private with /sb-images
• docker-username -> replace DOCKER_USERNAME with ARTIFACTORY_USERNAME
• docker-password -> replace DOCKER_PASSWORDwith ARTIFACTORY_PASSWORD
• docker-registry -> if set replace registry.staffbase.com with staffbase.jfrog.io

The new secrets are available as a company-wide Github secret or environment variable.

Clusters are already prepared for the change and should be able to pull images from the new registry.

Checklist

• Write tests
• Make sure all tests pass
• Update documentation
• Review the Contributing Guideline and sign CLA
• Reference relevant issue(s) and close them after merging

[github-actions]

CLA Assistant Lite bot All contributors have signed the CLA ✍️ ✅

[kaitimmer]

I have read the CLA Document and I hereby sign the CLA

[kaitimmer]

recheck

[kaitimmer]

In a few talks we decided to keep the defaults Staffbase specific. Just removing the registry URL default didn't feel right, as we also set other Staffbase specific defaults like the GitHub User, the gitops repository name, ….