Also, ping Dan Walsh as he is leading work on our (Red Hat) end to get this working.
Integration with host systemd/machinectl is nice, but it requires modification of host setup, while my solution can be run on unmodified docker, i.e. it is universal. I will manage my containers using Kubernetes, so integration with host systemd is useless for me.
I sent email to Dan.
Some of us just can't face going back to writing start-up scripts.