Pi-hole on wireguard client

compose.yaml

---
version: "2.1"
networks:
  private_network:
    name: internal
    ipam:
      driver: default
      config:
        - subnet: 10.100.0.0/24
services:
  wireguard:
    image: lscr.io/linuxserver/wireguard:latest
    container_name: wireguard
    hostname: wireguard
    cap_add:
      - NET_ADMIN
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=Asia/Kolkata
      - ALLOWEDIPS=0.0.0.0/0 #optional
    volumes:
      - ./config:/config
    sysctls:
      - net.ipv4.conf.all.src_valid_mark=1
    restart: unless-stopped
    dns:
      - 127.0.0.1
      - 10.100.0.200 # Points to unbound
    networks:
      private_network:
        ipv4_address: 10.100.0.10

  unbound:
    image: "pedantic/unbound:latest"
    container_name: unbound
    restart: unless-stopped
    hostname: "unbound"
    volumes:
      - "./unbound:/opt/unbound/etc/unbound/"
    networks:
      private_network:
        ipv4_address: 10.100.0.200

  pihole:
    depends_on: [unbound, wireguard]
    container_name: pihole
    image: pihole/pihole:latest
    restart: unless-stopped
    environment:
      TZ: "Asia/Kolkata"
      WEBPASSWORD: "" # Blank password - Can be whatever you want.
      ServerIP: 10.6.0.10 # Internal IP of pihole
      DNS1: 10.100.0.200 # Unbound IP
      DNS2: 10.100.0.200 # If we don't specify two, it will auto pick google.
    volumes:
      - "./etc-pihole/:/etc/pihole/"
      - "./etc-dnsmasq.d/:/etc/dnsmasq.d/"
    network_mode: container:wireguard