services:
  db:
    image: mysql:8.0
    container_name: mysql_db
    restart: unless-stopped
    command:
      - --max_allowed_packet=${MYSQL_MAX_ALLOWED_PACKET:-512M}
      - --innodb_buffer_pool_size=${MYSQL_INNODB_BUFFER_POOL_SIZE:-1G}
      - --tmp_table_size=${MYSQL_TMP_TABLE_SIZE:-256M}
      - --max_heap_table_size=${MYSQL_MAX_HEAP_TABLE_SIZE:-256M}
    environment:
      MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD:-root}
      MYSQL_DATABASE: ${MYSQL_DATABASE:-school}
    ports:
      - "3306:3306"
    volumes:
      - mysql_data:/var/lib/mysql

  phpmyadmin:
    image: phpmyadmin/phpmyadmin
    container_name: phpmyadmin
    restart: unless-stopped
    platform: linux/amd64
    environment:
      PMA_HOST: db
      PMA_PORT: 3306
      PMA_USER: root
      PMA_PASSWORD: ${MYSQL_ROOT_PASSWORD:-root}
      UPLOAD_LIMIT: ${PHPMYADMIN_UPLOAD_LIMIT:-1G}
    ports:
      - "8081:80"   # access phpMyAdmin on http://localhost:8081
    depends_on:
      - db

volumes:
  mysql_data: