$ docker run --rm -ti -v /sys/firmware/:/sys/firmware/ alpine
/ # ls -l /sys/firmware/
total 0
/ #
$ docker run --rm -ti -v /sys/firmware/:/rootfs/sys/firmware/ alpine
/ # ls -l /rootfs/sys/firmware/
total 0
drwxr-xr-x 5 root root 0 Nov 6 01:53 acpi
drwxr-xr-x 3 root root 0 Nov 6 01:53 dmi
drwxr-xr-x 10 root root 0 Nov 6 01:53 memmap
drwxr-xr-x 4 root root 0 Nov 6 01:53 qemu_fw_cfg
