Mounting one Rclone drive is now possible but you would need to uninstall/install the SSH module if this was installed prior to the 1st July 2020 because the image has now been updated.
It is possible to make a backup of the .rclone.conf and restore once the newer version of the SSH module is installed so you wont need to go through the initial setup again.
This guide is presuming you have already setup your rclone drive as per this guide.
Any application using the rclone mount for example Plex would need to be stopped before the mount command is issued and then started once the rclone drive is mounted.
The rclone mount command would need to be edited before being issued, the sections to edit are remote and folder.
In the mount command replace Gdrive with the name you used for your remote in the Rclone setup, you can also add a folder instead of the forward slash.
The rclone-mnt folder would have already been created and this cannot be changed.
Rclone Mount Command
screen -d -m rclone mount --allow-non-empty --allow-other --use-mmap --dir-cache-time 168h --timeout 1h --umask 002 --poll-interval=1m --vfs-cache-mode writes --vfs-read-chunk-size 64M --vfs-read-chunk-size-limit 2048M --tpslimit 10 Gdrive:/ /rclone-mnt
Rclone Unmount Command
/bin/fusermount -uz /rclone-mnt
Using systemd to automatically mount the rclone drive after a reboot or crash is not currently possible due to the privileges required to run systemd.