Decide whether to remove buildId-tagged images from staging registry as part of pipeline

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Current Behavior

Currently, we are tagging images with the gitlab ci Build ID to ensure the uniqueness of the images for scanning purposes, and those id-tagged images are remaining in the staging registry.

Purpose

Let's start deleting the id-tagged images as part of the pipeline post-scanning.

Plan

This might be a good place to add a .post action for the pipeline, so we are always removing the image from the staging registry.

Acceptance Criteria

id-tagged images do not persist in the staging registry beyond the lifetime of the pipeline run.