services:
  web:
    image: debian:12-slim
    command: ["sleep", "infinity"]
    networks:
      infra_sim:
        ipv4_address: 172.20.0.11

  db:
    image: debian:12-slim
    command: ["sleep", "infinity"]
    networks:
      infra_sim:
        ipv4_address: 172.20.0.21

  lb:
    image: debian:12-slim
    command: ["sleep", "infinity"]
    networks:
      infra_sim:
        ipv4_address: 172.20.0.31

networks:
  infra_sim:
    driver: bridge
    ipam:
      config:
        - subnet: 172.20.0.0/24