services:
  postgres:
    image: postgres:16-alpine
    environment:
      POSTGRES_DB: payments
      POSTGRES_USER: payments
      POSTGRES_PASSWORD: ${DB_PASSWORD:-local-only-password}
    ports: ["${PG_PORT:-5432}:5432"]
    volumes: ["payments-data:/var/lib/postgresql/data"]
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U payments -d payments"]
      interval: 3s
      timeout: 3s
      retries: 20
volumes:
  payments-data: