add docker compose example

tasks/main.yml

@@ -1,2 +1,31 @@
 ---
-# tasks file for ansible-pihole
+# tasks file for ansible-pihole
+
+
+version: "3"
+services:
+  pihole:
+    container_name: pihole
+    image: pihole/pihole:latest
+    ports:
+      - "53:53/tcp"
+      - "53:53/udp"
+      - "67:67/udp"
+      - "8090:80/tcp"
+      - "8091:443/tcp"
+    environment:
+      TZ: 'Europe/Paris'
+      WEBPASSWORD: 'XiEHusW6'
+      DNS1: '1.1.1.1'
+      DNS2: '80.67.169.40'
+
+      # WEBPASSWORD: 'set a secure password here or it will be random'
+    # Volumes store your data between container upgrades
+    volumes:
+       - '/etc/docker/pihole/:/etc/pihole/'
+       - '/etc/docker/dnsmasq.d/:/etc/dnsmasq.d/'
+    # Recommended but not required (DHCP needs NET_ADMIN)
+    #   https://github.com/pi-hole/docker-pi-hole#note-on-capabilities
+    cap_add:
+      - NET_ADMIN
+    restart: 'no'