Seems like it’s at https://hub.docker.com/r/redhat/ubi9 (though nothing pushed there yet, see instead https://hub.docker.com/r/redhat/ubi8 for RHEL8 for now, I guess). See also https://developers.redhat.com/products/rhel/ubi
https://catalog.redhat.com/software/containers/search?q=ubi9...
red hat has some sort of partnership with docker to have them available in docker hub, i guess it's just not there yet...
https://www.redhat.com/en/about/press-releases/red-hat-bring...