# Docker RO effort

## Create base image, simpel
dd if=./2021-01-11-raspios-buster-armhf-lite.img of=/dev/sda status=progress
touch ssh -> boot partition
sudo apt-get update
sudo apt-get upgrade

## making a RO overlay root fs => enable it in raspi-config

## Mounting root as RW?

sudo losetup -f /dev/mmcblk0p2
sudo mount -o rw /dev/loop0 /mnt

## If you need to mount / update
chroot /mnt
mount -t proc /proc proc/
mount --rbind /sys sys/
mount --rbind /dev dev/

## Docker's overlay2 needs to be a tmpfs, in fact, docker wants to do some
mambo-jumbo inside and does not want overlay, need tmpfs

sudo mount -t tmpfs tmpfs /var/lib/docker
need to copy contents of overlay2?


sudo mount -t tmpfs tmpfs /var/lib/docker
sudo cp -r /mnt/var/lib/docker /var/lib/

cp -r /var/lib/docker/* /mnt/var/lib/docker

1, UART > HW
2, GSM - generic - ip config  / reboot / setup /
3, wahtchdog mod (added?)
4, BalenaOS, alternativy