Pruning images needs a little work.
- remove dependency on a local catalog of images - use
refresh-releasescode to get an in-memory assessment of what images are currently out there
- default for
prune-images?) is to report what would be done. An additional flag must be provided to really do the pruning.
- don't report unknown images by default -- but the ability to do so is useful (finding images that weren't tagged properly)
refresh-releasesafterward to keep
releases/<profile>.yamlupdated with reality