version: '3.8'

services:
  error-pages:
    image: tarampampam/error-pages:latest # Using the latest tag is highly discouraged. Please, use tags in X.Y.Z format
    environment:
      TEMPLATE_NAME: app-down
    networks:
      - proxy
    deploy:
      placement:
        constraints:
          - node.role == worker
      labels:
         - "traefik.enable=true"
         - "traefik.docker.network=proxy"
         - # use as "fallback" for any non-registered services (with priority below normal)
         - "traefik.http.routers.error-pages-router.rule=HostRegexp(`{host:.+}`)"
         - "traefik.http.routers.error-pages-router.priority=10"
         - # should say that all of your services work on https
         - "traefik.http.routers.error-pages-router.tls=true"
         - "traefik.http.routers.error-pages-router.entrypoints=https"
         - "traefik.http.routers.error-pages-router.middlewares=error-pages-middleware"
         - "traefik.http.services.error-pages-service.loadbalancer.server.port=8080"
         - # "errors" middleware settings
         - "traefik.http.middlewares.error-pages-middleware.errors.status=400-599"
         - "traefik.http.middlewares.error-pages-middleware.errors.service=error-pages-service"
         - "traefik.http.middlewares.error-pages-middleware.errors.query=/{status}.html"

  app:
    deploy:
      labels:
        # next line is important
        - "traefik.http.routers.${STACK_NAME}.middlewares=error-pages-middleware"
        - "traefik.http.services.${STACK_NAME}.loadbalancer.server.port=80"