compose.yaml

services:
  db:
    image: postgres:16-alpine
    ports:
      - "5434:5432"
    environment:
      POSTGRES_DB: ${POSTGRES_DB:-library}
      POSTGRES_USER: ${POSTGRES_USER:-library}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-library}
    volumes:
      - postgres-data:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U $$POSTGRES_USER -d $$POSTGRES_DB"]
      interval: 5s
      timeout: 5s
      retries: 12
      start_period: 5s

  app:
    build:
      context: .
    ports:
      - "${APP_PORT:-8080}:8080"
    environment:
      DB_HOST: db
      DB_PORT: 5432
      DB_NAME: ${POSTGRES_DB:-library}
      DB_USERNAME: ${POSTGRES_USER:-library}
      DB_PASSWORD: ${POSTGRES_PASSWORD:-library}
    depends_on:
      db:
        condition: service_healthy
    restart: unless-stopped

volumes:
  postgres-data: