services:
  app01-replica:
    image: ${APP01_IMAGE}
    hostname: ${APP01_HOSTNAME}
    environment:
      APP01_IMAGE: "${APP01_IMAGE}"    
      APP01_HOSTNAME: "${APP01_HOSTNAME}"
      APP01_EXPOSED_PORT: "${APP01_EXPOSED_PORT}"
      URL: "${URL}"
      APP01_PATH_PREFIX: "${APP01_PATH_PREFIX}"
      PROXY_NETWORK: "${PROXY_NETWORK}"
    expose:
      - "${APP01_EXPOSED_PORT}"
    deploy:
      mode: replicated
      replicas: 3
    restart: always      
    logging:
      driver: "json-file"
      options:
        max-size: "50m"          
        max-file: "10"             
        compress: "true"          
        rotate-max-age: "7d"     
        labels: "app=app01,env=production,version=1.0.0"
    labels:
      app: "app01"
      version: "1.0.0"
      env: "test"
      app_url: "${URL}/${APP01_PATH_PREFIX}"
      traefik.enable: "true"
      traefik.http.routers.app01.entrypoints: "https"
      traefik.http.routers.app01.rule: "Host(`${URL}`) && PathPrefix(`/${APP01_PATH_PREFIX}`)"
      traefik.http.routers.app01.tls: "true"
      traefik.http.routers.app01.tls.certresolver: "letsEncrypt"
      traefik.http.routers.app01.service: "app01"
      traefik.http.services.app01.loadbalancer.server.port: "${APP01_EXPOSED_PORT}"
      traefik.http.services.app01.loadbalancer.passhostheader: "true"
      traefik.http.routers.app01.middlewares: "app01-header"
      traefik.http.middlewares.app01-header.headers.referrerPolicy: "no-referrer"
      traefik.http.middlewares.app01-header.headers.stsSeconds: "15552000"
      traefik.http.middlewares.app01-header.headers.forceSTSHeader: "true"
      traefik.http.middlewares.app01-header.headers.stsPreload: "true"
      traefik.http.middlewares.app01-header.headers.customrequestheaders.X-Forwarded-Proto: "https,wss"
      traefik.docker.network: "${PROXY_NETWORK}"
    networks:
      - proxy

  app02:
    image: ${APP02_IMAGE}
    hostname: ${APP02_HOSTNAME}
    environment:
      APP02_IMAGE: "${APP02_IMAGE}"    
      APP02_HOSTNAME: "${APP02_HOSTNAME}"      
      APP02_EXPOSED_PORT: "${APP02_EXPOSED_PORT}"
      APP03_HOSTNAME: "${APP03_HOSTNAME}"
      APP03_EXPOSED_PORT: "${APP03_EXPOSED_PORT}"      
      URL: "${URL}"
      APP01_PATH_PREFIX: "${APP02_PATH_PREFIX}"      
      PROXY_NETWORK: "${PROXY_NETWORK}"
      SERVICE_NETWORK: ${SERVICE_NETWORK} 
    expose:
      - "${APP02_EXPOSED_PORT}"
    restart: always            
    deploy:
      resources:
        limits:
          cpus: '0.50'
          memory: 50M   
        reservations:
          cpus: '0.25'
          memory: 20M           
    logging:
      driver: "fluentd"
      options:
        fluentd-address: "tcp://<fluentd-host>:24224" 
        tag: "docker.{{.Name}}" 
    labels:
      app: "app02"
      version: "1.0.0"
      env: "test"
      app_url: "${URL}/${APP02_PATH_PREFIX}"
      traefik.enable: "true"
      traefik.http.routers.app01.entrypoints: "https"
      traefik.http.routers.app01.rule: "Host(`${URL}`) && PathPrefix(`/${APP02_PATH_PREFIX}`)"
      traefik.http.routers.app01.tls: "true"
      traefik.http.routers.app01.tls.certresolver: "letsEncrypt"
      traefik.http.routers.app01.service: "app01"
      traefik.http.services.app01.loadbalancer.server.port: "5000"
      traefik.http.services.app01.loadbalancer.passhostheader: "true"
      traefik.http.routers.app01.middlewares: "app01-header"
      traefik.http.middlewares.app01-header.headers.referrerPolicy: "no-referrer"
      traefik.http.middlewares.app01-header.headers.stsSeconds: "15552000"
      traefik.http.middlewares.app01-header.headers.forceSTSHeader: "true"
      traefik.http.middlewares.app01-header.headers.stsPreload: "true"
      traefik.http.middlewares.app01-header.headers.customrequestheaders.X-Forwarded-Proto: "https,wss"
      traefik.docker.network: "${PROXY_NETWORK}"                      
    networks:
      - proxy
      - service


  app03:
    image: ${APP03_IMAGE}
    hostname: ${APP03_HOSTNAME}
    depends_on:
      app02:
        condition: service_started    
    environment:
      APP03_IMAGE: "${APP03_IMAGE}"    
      APP03_HOSTNAME: "${APP03_HOSTNAME}"
      APP03_EXPOSED_PORT: "${APP03_EXPOSED_PORT}"
      SERVICE_NETWORK: ${SERVICE_NETWORK} 
    expose:
      - "${APP03_EXPOSED_PORT}"
    restart: always            
    deploy:
      resources:
        limits:
          cpus: '0.50'
          memory: 50M   
        reservations:
          cpus: '0.25'
          memory: 20M           
    logging:
      driver: "fluentd"
      options:
        fluentd-address: "tcp://<fluentd-host>:24224" 
        tag: "docker.{{.Name}}" 
    labels:
      app: "app03"
      version: "1.0.0"
      env: "test"
    networks:
      - service

networks:
  proxy:
    name: ${PROXY_NETWORK} 
    external: true
  service:
    name: ${SERVICE_NETWORK} 
    external: true