Speed Optimization

[wurstbrot]

Organization might use the same images with different names, e.g.:

• registry.com/team1/mongo:3.1
• registry.com/team2/mongo:3.1
• registry.com/team1/mongo@sha256:123
• registry.com/team2/mongo@sha256:123

The current algorithm doesn't take it into account. Evaluation of speed optimization should be performed.
This issue is mainly related to storage.

[philband]

One possible approach would to only identify images by their manifest hash and use that as storage identified.
This would at least de-duplicate images with different tags but the same content.

For images with mismatching manifest hashes, I see no easy way. If we de-duplicate them by image name and tag, we might miss security issues present in one of the images and therefore not actually scan the images in production.