services:
  db:
    image: mysql
    restart: always
    healthcheck:
      test: ["CMD-SHELL", "mysqladmin ping -h localhost -u${MYSQL_USER} -p${MYSQL_PASSWORD}"]
      interval: 10s
      timeout: 30s
      retries: 5
      start_period: 30s
    volumes:
      - app-db-data:/var/lib/mysql
    env_file:
      - .env
    environment:
      - MYSQL_ROOT_PASSWORD=${MYSQL_ROOT_PASSWORD?Variable not set}
      - MYSQL_USER=${MYSQL_USER?Variable not set}
      - MYSQL_PASSWORD=${MYSQL_PASSWORD?Variable not set}
      - MYSQL_DATABASE=${MYSQL_DATABASE?Variable not set}