This is a regularly asked question, but I couldn't find a corresponding issue, maybe I searched incorrectly, but otherwise, here you go!
https://twitter.com/search?q=OCI%20singularity&src=typd
https://twitter.com/mr_openstack/status/887685486432714752
https://twitter.com/biocrusoe/status/947420025002086400
There doesn seem to be any technical reason not to do it, it mostly seems to be a time / human resource issue that prevents this from being implemented. Maybe this is a nice subject for any upcoming hackathon.