https://www.linkedin.com/pulse/creating-your-first-home-assistant-add-on-issac-goldstand
https://lifepo4wered.com/files/LiFePO4wered-Pi+-Product-Brief.pdf
https://github.com/xorbit/LiFePO4wered-Pi/blob/master/Dockerfile
https://raspberrypi.stackexchange.com/questions/90315/how-can-i-get-dev-i2c-devices-to-appear-on-alpine-linux
Uncomment line
dtparam=i2c_arm=on
in /mnt/boot/config.txt or /boot/config.txt or /boot/usercfg.txt
/mnt/boot/config.txt
/boot/config.txt
/boot/usercfg.txt
Load module at host startup
echo 'i2c-dev' > /etc/modules-load.d/i2c.conf