Download lasted version of Alpine OS for Raspberry PI Alpine OS Downloads
Uncompress alpine-rpi-x.x.x-armhf.tar.gz in SD card and copy paste pi-car-robot.apkovl.tar.gz and usercfg.txt.
Finally put SD card in a Raspberry PI and boot.
Use a main script to do all in one step.
/root/install.sh
Include firmware, scripts and root folder to config tracking.
/scripts/init-config.sh
Make a persistent storage persist.img
/scripts/persistent-storage.sh
Install Java Oracle v161.12 in a persistent img java.img
/scripts/java8-install.sh