Here is the compose and post up im working on

services:
  gluetun:
    image: qmcgaw/gluetun:v3
    hostname: gluetun
    restart: always
    networks:
      wg:
        ipv4_address: 192.168.1.10    
    ports:
      - 51720:51720/udp # wireguard ui
      - 51821:51821 # wireguard tunnel
    cap_add:
      - NET_ADMIN
    devices:
      - /dev/net/tun:/dev/net/tun
    environment:
      - VPN_SERVICE_PROVIDER=${VPN_SERVICE_PROVIDER}
      - VPN_TYPE=${VPN_TYPE}
      - WIREGUARD_PRIVATE_KEY=${PRIVATE_KEY}
      - WIREGUARD_ADDRESSES=${WIREGUARD_ADDRESSES}
      - SERVER_CITIES=${SERVER_CITIES}
      - ALLOWED_IPS=0.0.0.0/1
      - FIREWALL_OUTBOUND_SUBNETS=${OUTBOUND_SUBNET}  #change to appropriate subnet
      - DNS_ADDRESS=${DNS}
#      - HEALTH_TARGET_ADDRESS=cloudflare.com:80
#      - HEALTH_VPN_DURATION_INITIAL=120s

  wg-easy:
    environment:
      - INSECURE=true #INITIAL SETUP NOT FOR PRODUCTION
    image: ghcr.io/wg-easy/wg-easy:15
    container_name: wg-easy
    restart: unless-stopped
    networks:
      wg:
        ipv4_address: 192.168.1.20 
    
    volumes:
      - ./data:/etc/wireguard
      - /lib/modules:/lib/modules:ro
    ports:
      - 51720:51720/udp #wireguard
      - 51821:51821/tcp #web ui
    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

networks:
  vpn:
    driver: bridge
    enable_ipv6: false
    ipam:
      driver: default
      config:
        - subnet: 192.168.1.0/24 #container ipgateway
#        - subnet: fdcc:ad94:bacf:61a3::/64

Post up

# Detect the VPN bridge interface by wg-easy's container IP
VPN=$(ip -o -4 addr show | awk '$4 ~ /^192.168.1.20\// {print $2; exit}'); test -n "$VPN";
iptables -P FORWARD DROP;
ip6tables -P FORWARD DROP;
iptables -A INPUT -p udp -m udp --dport {{port}} -j ACCEPT;
ip6tables -A INPUT -p udp -m udp --dport {{port}} -j ACCEPT;

# Direct subnets:
ip route -A 10.1.0.0/16 via 192.168.1.0/24 dev $VPN table 200;
ip -6 route -A 10.1.0.0/16 via 192.168.1.0/24 dev $VPN table 200;