Pihole+DNSCrypt+OpenVPN

version: '3.7'

services:
    dnscrypt-proxy:
      image: melchor9000/dnscrypt-proxy
      hostname: dnscrypt-proxy
      container_name: dnscrypt-proxy
      restart: always
      volumes:
        #Here I have the toml and txt files
        #The cache is stored in another folder, but is not persisted
        - "/path_to_docker_volumes/dnscrypt-proxy:/etc/dnscrypt-proxy"
      networks:
        pihole_net:
          aliases:
            - dnscrypt-proxy
          ipv4_address: 172.20.0.10
    pihole:
     container_name: pihole
     hostname: pihole
     image: pihole/pihole
     restart: always
     ports:
       - "53:53/tcp"
       - "53:53/udp"
       - "80:80/tcp"
       - "443:443/tcp"
     volumes:
       - /path_to_docker_volumes/pihole/pihole:/etc/pihole/
       - /path_to_docker_volumes/pihole/dnsmasq.d/:/etc/dnsmasq.d/
     cap_add:
       - NET_ADMIN
     dns:
       - 127.0.0.1
       - 1.1.1.1
     environment:
       TZ: Europe/Athens
       ServerIP: 192.168.1.110
       DNS1: 172.20.0.10#53535
       DNS2: 172.20.0.10#53535
       WEBPASSWORD: "web_pass"
     restart: always
     depends_on:
       - dnscrypt-proxy
     networks:
       pihole_net:
         aliases:
           - pihole
         ipv4_address: 172.20.0.20
    openvpn:
      cap_add:
       - NET_ADMIN
      image: kylemanna/openvpn
      container_name: openvpn
      hostname: openvpn
      ports:
       - "1194:1194/udp"
      restart: always
      depends_on:
       - pihole
      volumes:
       - /path_to_docker_volumes/openvpn:/etc/openvpn
      networks:
        pihole_net:
          aliases:
            - openvpn
          ipv4_address: 172.20.0.30


networks:
  pihole_net:
    ipam:
      driver: default
      config:
        - subnet: 172.20.0.0/16