./buildimg.sh bpi-r2 jammy
./buildimg.sh bpi-r3 bookworm
gunzip -c bpi-r3_sdmmc.img.gz | sudo dd bs=1M status=progress conv=notrunc,fsync of=/dev/sdX
user: root password: bananapi
ssh root-login enabled (should be disabled after other users are created)
/etc/ssh/sshd_config (open e.g. with nano): add # before PermitRootLogin=yes and restart ssh daemon
systemctl restart ssh