Use rclone-beta plugin (yes the plugin)......not the Docker Container. Then open a shell and type "rclone config" to begin your setup
I've just installed the beta but I still only see rclone (not beta) in my plugin list. Should there be two rclones in the installed plugins tab -- rclone and rclone-beta?
update: trying again after uninstalling rclone and installing rclone-beta