Lock image: provide a solution to block updating an image but still allow deleting it

[northtyphoon]

https://docs.microsoft.com/en-us/azure/container-registry/container-registry-image-lock

Current ACR provide two lock mode,

1. write-enabled: block both update and delete
2. delete-enabled: allow update but block delete only

There is no solution to block update but allow delete

[shizhMSFT]

Basically, it is an archive mode.

[sajayantony]

@northtyphoon - should we close this since there is no plan to fix this issue. Changing the behavior of the write flag is a breaking change. @shizhMSFT's suggestion of archive sounds like an option. Azure storage does have an archive status

[github-actions[bot]]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 30 days.

[github-actions[bot]]

This issue was closed because it has been stalled for 30 days with no activity.