Google cloud doesn't support deleting a manifest with tag exists #14
Description
What would you like to be cleaned:
As titled, but oras delete_tag function is behaving different following the standard way of docker, deleting the manifest directly even it has tags.
To solve this, we need to add extra codes to oras to delete the tag first and then delete the manifest.
Also see discussion here: genuinetools/reg#136
Why is this needed:
Mange the experiment lifecycle together with the artifacts.