version: "3.9"
services:
  mariadb:
    image: mariadb:11.4
    container_name: test-mariadb
    environment:
      MARIADB_ROOT_PASSWORD: rootpw
      MARIADB_DATABASE: group_project
      MARIADB_USER: appuser
      MARIADB_PASSWORD: apppass
    ports:
      - "3307:3306"  # host:container (use 3307 on host to avoid conflicts)
    healthcheck:
      test: ["CMD", "mariadb-admin", "ping", "-h", "127.0.0.1", "-u", "root", "-prootpw", "--silent"]
      interval: 5s
      timeout: 2s
      retries: 20
    # Truly ephemeral, fast storage (removed when container stops)
    tmpfs:
      - /var/lib/mysql