[FIXED] Burn-n-boot pihole

I think I found the ultimate solution for making my own custom burn-n-boot Raspbian image with fully fledged pihole running on it.

Wrote Raspbian Lite with Imager this time on the SD card. Then installed qemu-system-arm on my live USB Debian and downloaded ready made kernel image and compiled device tree file from https://github.com/dhruvvyas90/qemu-rpi-kernel that can emulate my Raspberry Pi 1. Quick fdisk -l to find out disk name this time is /dev/sda and this single command has booted an entire virtual machine from the SD card:

sudo qemu-system-arm -M versatilepb -cpu arm1176 -m 256 -hda /dev/sda -dtb ~/Downloads/versatile-pb-buster.dtb -kernel ~/Downloads/kernel-qemu-4.19.50-buster -append 'root=/dev/sda2 panic=1' -no-reboot &

We can jump right into installing pihole:

sudo curl -sSL https://install.pi-hole.net | bash

Could configure the final static IP address and default gateway also as it will only be applied after reboot so could still pull static DHCP config file from host:

sudo scp jordana@10.0.2.2:04-pihole-static-dhcp.conf /etc/dnsmasq.d

After minimal password management shutdown the virtual machine:

passwd
pihole -a -p
sudo shutdown -h now

Dropped a new file named ssh into boot disk from File Manager before ejected it and that is it. Swapped in the new card into RPI and the family did not notice the change. Finished by expanding the file-system with raspi-config, apt update/upgrade and enabling DHCP from web interface and confirmed it is all running OK.