Script to set up a Pihole container for docker.

pihole_docker_create.sh

#!/bin/bash
IP_LOOKUP="$(ip route get 8.8.8.8 | awk '{ print $NF; exit }')"  # May not work for VPN / tun0
IPv6_LOOKUP="$(ip -6 route get 2001:4860:4860::8888 | awk '{ print $10; exit }')"  # May not work for VPN / tun0
IP="${IP:-$IP_LOOKUP}"  # use $IP, if set, otherwise IP_LOOKUP
IPv6="${IPv6:-$IPv6_LOOKUP}"  # use $IPv6, if set, otherwise IP_LOOKUP
DOCKER_CONFIGS="/home/pi/pihole/config"  # Default of directory you run this from, update to where ever.

echo "IP: ${IP} - IPv6: ${IPv6}"

# Remove current if exists (for use in updating Pihole)
docker pull pihole/pihole:v4.0_armhf
docker rm -f pihole

# Default ports + daemonized docker container
docker run -d \
--name pihole \
-p 53:53/tcp -p 53:53/udp -p 80:80 \
-v "${DOCKER_CONFIGS}/pihole/:/etc/pihole/" \
-v "${DOCKER_CONFIGS}/dnsmasq.d/:/etc/dnsmasq.d/" \
-e ServerIP="${IP:-$(ip route get 8.8.8.8 | awk '{ print $NF; exit }')}" \
-e ServerIPv6="${IPv6:-$(ip -6 route get 2001:4860:4860::8888 | awk '{ print $10; exit }')}" \
--restart=always \
pihole/pihole:v4.0_armhf