I'm using renovate to update Docker images from Redhat public registry : https://registry.access.redhat.com which is a Docker V2 registry.
Renovate is not able to detect latest images version for ubi8-minimal by example. I tried to curl the registry by running :
curl -sL https://registry.access.redhat.com/v2/ubi8-minimal/tags/list | jq
Only 50 random (not sorted) tags are returned. The response header includes a link for fetching futher results (by adding next_page query parameter to the same request) if required. It seems that the n query parameter is ignored if a value > 50 is set. I think Renovate is using the same API to get latest tagsfor Docker images But I'm not sure if it is supposed to query multiple times the registry and setting next_page parameter in order to get the right latest tag.