docker-compose.yml

---
version: "3.9"

networks:
  proxy:
    name: ${HB_PROXY_NETWORK}
    external: true

services:
  app:
    image: ${HB_IMAGE_REGISTRY:?}/${HB_IMAGE_OWNER:?}/${COMPOSE_PROJECT_NAME:?}-docs:${HB_IMAGE_TAG:?}
    networks:
      - proxy
    healthcheck:
      disable: true
    deploy:
      # mode: global
      mode: replicated
      replicas: ${APP_REPLICAS:-1}
      placement:
        preferences: []
        max_replicas_per_node: ${APP_REPLICAS_PER_NODE:-${APP_REPLICAS:-1}}
        constraints:
          - "node.labels.${APP_PLACEMENT_LABEL:-frontend} == true"
          # - "node.role == manager"
          # - "node.platform.arch==x86_64"
          # - "node.platform.arch==armv7l"
      update_config:
        parallelism: 1
        delay: 5s
        monitor: 5s
        failure_action: pause
        order: stop-first
      resources:
        reservations:
          cpus: "0.01"
          memory: "16M"
      #   limits:
      #     cpus: "0.50"
      #     memory: "512M"
      labels:
        # enable traefik
        - "traefik.enable=true"
        - "traefik.docker.network=${HB_PROXY_NETWORK:?}"
        # define load balancer.
        - "traefik.http.services.${COMPOSE_PROJECT_NAME:?}_${APP_SVC_ID:?}.loadbalancer.server.port=${APP_HTTP_PORT:?}"
        - "traefik.http.services.${COMPOSE_PROJECT_NAME:?}_${APP_SVC_ID:?}.loadbalancer.server.scheme=${APP_HTTP_PROTOCOL:-http}"
        - "traefik.http.services.${COMPOSE_PROJECT_NAME:?}_${APP_SVC_ID:?}.loadbalancer.sticky=${APP_STICKY_LB:-false}"
        - "traefik.http.services.${COMPOSE_PROJECT_NAME:?}_${APP_SVC_ID:?}.loadbalancer.sticky.cookie.secure=${APP_STICKY_LB:-false}"
        - "traefik.http.services.${COMPOSE_PROJECT_NAME:?}_${APP_SVC_ID:?}.loadbalancer.sticky.cookie.name=StickySessionCookie_${COMPOSE_PROJECT_NAME:?}_${APP_SVC_ID:?}"
        # define https entrypoint.
        - "traefik.http.routers.${COMPOSE_PROJECT_NAME:?}_${APP_SVC_ID:?}.entrypoints=websecure"
        - "traefik.http.routers.${COMPOSE_PROJECT_NAME:?}_${APP_SVC_ID:?}.rule=(Host(`${APP_SUBDOMAIN}${HB_DOMAIN:?}`) && PathPrefix(`/${APP_ROUTE_PREFIX}`))${APP_EXTRA_ROUTES:-}"
        - "traefik.http.routers.${COMPOSE_PROJECT_NAME:?}_${APP_SVC_ID:?}.tls=true"
        # - "traefik.http.routers.${COMPOSE_PROJECT_NAME:?}_${APP_SVC_ID:?}.tls.certresolver=letsencrypt"
        # strip prefixes.
        # - "traefik.http.middlewares.${COMPOSE_PROJECT_NAME:?}_${APP_SVC_ID:?}_stripprefix.stripprefix.prefixes=/${APP_STRIP_PREFIX}"
        # set middlewares.
        - "traefik.http.routers.${COMPOSE_PROJECT_NAME:?}_${APP_SVC_ID:?}.middlewares=${APP_MIDDLEWARE-secured-auth}"  #",${COMPOSE_PROJECT_NAME:?}_${APP_SVC_ID:?}_stripprefix"
    volumes:
      - /etc/ssl/certs/ca-certificates.crt:/etc/ssl/certs/ca-certificates.crt:ro
    configs:
      - source: app-config
        target: /etc/nginx/conf.d/default.conf
    environment:
      HOST_PREFIX: $APP_ROUTE_PREFIX

configs:
  app-config:
    name: ${COMPOSE_PROJECT_NAME:?}_app-config_01
    file: ./config/nginx.conf
    template_driver: golang