services:
  wg-easy:
    image: ghcr.io/wg-easy/wg-easy:15
    container_name: wg-easy
    # Kernel 6.18+ dropped the legacy iptables modules; the image defaults to
    # legacy iptables, so wg-quick's NAT rules fail ("can't initialize iptables
    # table nat"). Point iptables/ip6tables at the nft backend (which works with
    # the modern kernel) before running the normal entrypoint.
    entrypoint:
      - /bin/sh
      - -c
      - ln -sf /usr/sbin/iptables-nft /etc/alternatives/iptables && ln -sf /usr/sbin/ip6tables-nft /etc/alternatives/ip6tables && exec docker-entrypoint.sh "$$@"
      - --
    command: ["/usr/bin/dumb-init", "node", "server/index.mjs"]
    labels:
      - "com.centurylinklabs.watchtower.enable=true"
    networks:
      caddy:
        interface_name: wgeth1
      wg:
        ipv4_address: 10.42.42.42
        ipv6_address: fdcc:ad94:bacf:61a3::2a
        interface_name: wgeth0
    environment:
      WG_DEVICE: wgeth0
      EXPERIMENTAL_AWG: "true"
      # NixOS has no /lib/modules, so the modinfo-based auto-detect fails; the
      # amneziawg module is loaded on the host (nix-config boot.kernelModules).
      OVERRIDE_AUTO_AWG: awg
      DISABLE_IPV6: "true"
    volumes:
      - ./data:/etc/wireguard
      - /lib/modules:/lib/modules:ro
    ports:
      - "51820:51820/udp"
      # - "51821:51821/tcp"
    restart: unless-stopped
    healthcheck:
      test: ["CMD-SHELL", "timeout 5s sh -c \"awg show | grep -q interface\""]
      interval: 60s
      timeout: 5s
      retries: 3
    cap_add:
      - NET_ADMIN
      - SYS_MODULE
    sysctls:
      - net.ipv4.ip_forward=1
      - net.ipv4.conf.all.src_valid_mark=1
      - net.ipv6.conf.all.disable_ipv6=0
      - net.ipv6.conf.all.forwarding=1
      - net.ipv6.conf.default.forwarding=1
    logging:
      driver: "json-file"
      options:
        max-size: "100m"
        max-file: "3"

networks:
  caddy:
    name: caddy
    driver: bridge
    external: true
  wg:
    driver: bridge
    enable_ipv6: true
    ipam:
      driver: default
      config:
        - subnet: 10.42.42.0/24
        - subnet: fdcc:ad94:bacf:61a3::/64