---------- Commands for disabling Systemd Resolved
sudo systemctl disable systemd-resolved
sudo systemctl stop systemd-resolved
sudo rm /etc/resolv.conf 

---------- Host resolv.conf (create a new /etc/resolv.conf on your host)
nameserver 127.0.0.1
nameserver 8.8.8.8
nameserver 8.8.4.4

---------- Container resolv.conf (save it into a file next to docker-compose.yaml)
nameserver 127.0.0.1
nameserver 8.8.8.8
nameserver 8.8.4.4

---------- docker-compose.yaml
version: "3"

volumes:
  pihole-data:
  pihole-dnsmasq:

services:
  pihole:
    container_name: pihole
    image: pihole/pihole:v5.0
    ports:
      - 53:53/udp
      - 53:53/tcp
      - 67:67/udp
      - 443:443/tcp
      - 8080:80
    environment:
      TZ: 'Europe/Budapest'
      WEBPASSWORD: 'adm1n'
    volumes:
       - pihole-data:/etc/pihole/
       - pihole-dnsmasq:/etc/dnsmasq.d/
       - ./resolv.conf:/etc/resolv.conf
    restart: unless-stopped
    privileged: true