compose.yaml

services:
  client:
    hostname: client
    build: .
    init: true
    networks:
      - inside

  server:
    hostname: server
    build: .
    init: true
    networks:
      outside:
        ipv4_address: 10.12.0.10

  gw1:
    hostname: gw1
    build: .
    init: true
    volumes:
      - ./keepalived/gw1.conf:/etc/keepalived/keepalived.conf:ro
      - ./haproxy.cnf:/etc/haproxy.cnf
    networks:
      - inside
      - outside
    expose:
      - 2222
    cap_add:
      - NET_ADMIN
      - NET_BROADCAST

  gw2:
    hostname: gw2
    build: .
    init: true
    volumes:
      - ./keepalived/gw2.conf:/etc/keepalived/keepalived.conf:ro
    networks:
      - inside
      - outside
    expose:
      - 2222
    cap_add:
      - NET_ADMIN
      - NET_BROADCAST

networks:
  outside:
    driver: bridge
    ipam:
      config:
        - subnet: 10.12.0.0/16

  inside:
    driver: bridge
    enable_ipv6: true
    # Can't disable IPv4 ...yet https://github.com/moby/moby/issues/32850
    ipam:
      config:
        - subnet: fe80::/64