First commit

README.md

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+# 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
+