Description

This adds a MAJOR_VERSION tag (e.g., v7 from v7.12.0) to the Docker images. The idea is that users can use a “major” tag to automatically get all minor/patch updates when they re-pull the image without pinning the full version.

Motivation and Context

Many users want a stable image that updates with every minor/patch release in a major version. Adding MAJOR_VERSION tags makes it easy to track “stable” versions like v7 instead of always using exact versions like v7.12.0. Such stable tags were also offered by the Bitnami images which are no longer available openly soon.

This can be helpful especially when the images are used inside of larger units such as helm charts. This way the helm charts don't need to be updated every time to include patches of the oauth2-proxy images.

How Has This Been Tested?

Ran make locally and verified the commands invoked.

Checklist:

• My change requires a change to the documentation or CHANGELOG.
• I have updated the documentation/CHANGELOG accordingly.
• I have created a feature (non-master) branch for my PR.
• I have written tests for my code changes.