Hi,
I'm using the original docker image with my kubernetes stack, but while using the docker plugin, i think over that way is not possible to mount on k8s stack, while i usually does is, to use the rclone:beta and then mount from a DaemonSet.
Here is a exemple of the working helm chart.
https://github.com/CyberPoison/kube-rclone-docker-build
I let you examine or give me a feedback how can i run k8s in that way with realdebried_rclone.
But i think the devs of original rclone project will be happy to merge your news remote.