version: "3.7"

services:

  ghost:
    container_name: ghost
    image: ghost:3.0.0
    restart: always
    ports:
      - 80:2368
    environment:
      database__client: mysql
      database__connection__host: db
      database__connection__user: ghost_user
      database__connection__password: example
      database__connection__database: ghost
      url: http://localhost
    depends_on:
      - db
    networks:
      - backend
      - frontend
    deploy:
      restart_policy:
        condition: on-failure
        delay: 5s
        max_attempts: 3
        window: 120s
      replicas: 7
      resources:
        limits:
          memory: "128M"
          cpus: "250m"
        reservations:
          memory: "64M"
          cpus: "50m"
      update_config:
        parallelism: 1
        delay: 30s
        order: stop-first
      mode: replicated

  db:
    container_name: db
    image: mysql:5.7
    restart: always
    environment:
      MYSQL_RANDOM_ROOT_PASSWORD: "yes"
      MYSQL_DATABASE: ghost
      MYSQL_USER: ghost_user
      MYSQL_PASSWORD: example
    volumes:
      - db-storage:/var/lib/mysql
    networks:
      - backend
    deploy:

  adminer:
    container_name: adminer
    image: adminer
    restart: on-failure
    ports:
      - 8080:8080
    networks:
      - tools
      - backend
    deploy:
      replicas: 1
      resources:
        limits:
          memory: "128M"
          cpus: "500m"
        reservations:
          memory: "64M"
          cpus: "250m"

  redis:
    container_name: redis
    image: redis:latest
    volumes:
      - redis-storage:/data
    entrypoint: ["redis-server", "--appendonly", "yes"]
    restart: always
    networks:
      - backend
    deploy:
      resources:
        limits:
          memory: "128M"
          cpus: "500m"
        reservations:
          memory: "64M"
          cpus: "250m"

volumes:
  db-storage:
    name: db-storage-data
  redis-storage:
    name: db-storage-data

networks:
  backend:
  tools:
  frontend: