Basic stack

stack.yml

version: "3.7"

x-logging:
  &default-logging
  options:
    max-size: '12m'
    max-file: '5'
  driver: json-file
x-healthcheck:
  &default-healthcheck
  test: ["CMD", "/usr/local/bin/app-healthcheck"]
  interval: 5m
  timeout: 5s
  start_period: 30s

services:
  app:
    image: ${IMAGE_NAME}
    networks:
      - proxy
      - mysql
    expose:
      - "80"
    environment:
      CONTAINER_ROLE: app
    secrets:
      - source: dotenv
        target: .env
    deploy:
      replicas: 3
      labels:
        - "traefik.backend=${TRAEFIK_BACKEND}"
        - "traefik.docker.network=proxy"
        - "traefik.frontend.rule=Host:${TRAEFIK_HOSTNAME}"
        - "traefik.enable=true"
        - "traefik.port=80"
        - "traefik.default.protocol=http"
    healthcheck: *default-healthcheck
    logging: *default-logging

  scheduler:
    image: ${IMAGE_NAME}
    deploy:
      labels:
        - "traefik.enable=false"
    networks:
      - mysql
    environment:
      CONTAINER_ROLE: scheduler
    secrets:
      - source: dotenv
        target: .env
    healthcheck: *default-healthcheck
    logging: *default-logging

  queue:
    image: ${IMAGE_NAME}
    deploy:
      replicas: 1
      labels:
        - "traefik.enable=false"
    networks:
      - mysql
    environment:
      CONTAINER_ROLE: queue
    secrets:
      - source: dotenv
        target: .env
    healthcheck: *default-healthcheck
    logging: *default-logging

  migrations:
    image: ${IMAGE_NAME}
    deploy:
      replicas: 1
      labels:
        - "traefik.enable=false"
    networks:
      - mysql
    environment:
      CONTAINER_ROLE: migrations
    secrets:
      - source: dotenv
        target: .env

  redis:
    image: redis:4
    deploy:
      labels:
        - "traefik.enable=false"
    logging: *default-logging

secrets:
  dotenv:
    external: true
    name: ${DOTENV_NAME}

networks:
  proxy:
    external: true
  mysql:
    external: true