docker-pi-hole/doco-alpine.yml

alpine:
  image: diginc/pi-hole:alpine
  environment:
    # Your docker host IP is required if you run RUN (not build)
    ServerIP: 192.168.1.55
  ports:
    - "53:53/tcp"
    - "53:53/udp"
    - "80:80/tcp"
  cap_add:
    - NET_ADMIN