Mounting the host systems file system into the LXC container can be very helpful in many situations.
Easiest way is via the lxc config file example shows mounting the host /mnt/store1 directory directly into the container. Please ensure rootfs/mnt/store1 directory has been created within the container.
NOTE that it is critical to have no leading "/" in the container mount point (making it a relative mount point)
https://wiki.debian.org/LXC#Bind_mounts_inside_the_container