docker-compose.yml

version: "3.9"

services:
  # ── Application ─────────────────────────────────────────────────────────────
  api:
    build:
      context: .
      target: production
    container_name: auth_api
    restart: unless-stopped
    ports:
      - "8000:8000"
    environment:
      APP_ENV: development
      DEBUG: "true"
      SECRET_KEY: ${SECRET_KEY:-super-secret-dev-key-change-in-prod}
      POSTGRES_HOST: postgres
      POSTGRES_PORT: 5432
      POSTGRES_DB: ${POSTGRES_DB:-auth_service}
      POSTGRES_USER: ${POSTGRES_USER:-postgres}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-changeme}
      REDIS_HOST: redis
      REDIS_PORT: 6379
      ALLOWED_ORIGINS: ${ALLOWED_ORIGINS:-http://localhost:3000}
    depends_on:
      postgres:
        condition: service_healthy
      redis:
        condition: service_healthy
    networks:
      - backend
    volumes:
      - .:/app  # hot-reload in development; remove in production

  # ── Database migrations (one-off task) ──────────────────────────────────────
  migrate:
    build:
      context: .
      target: production
    container_name: auth_migrate
    command: alembic upgrade head
    environment:
      POSTGRES_HOST: postgres
      POSTGRES_PORT: 5432
      POSTGRES_DB: ${POSTGRES_DB:-auth_service}
      POSTGRES_USER: ${POSTGRES_USER:-postgres}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-changeme}
    depends_on:
      postgres:
        condition: service_healthy
    networks:
      - backend
    restart: "no"

  # ── PostgreSQL ───────────────────────────────────────────────────────────────
  postgres:
    image: postgres:16-alpine
    container_name: auth_postgres
    restart: unless-stopped
    environment:
      POSTGRES_DB: ${POSTGRES_DB:-auth_service}
      POSTGRES_USER: ${POSTGRES_USER:-postgres}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-changeme}
    ports:
      - "5432:5432"
    volumes:
      - postgres_data:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-postgres} -d ${POSTGRES_DB:-auth_service}"]
      interval: 10s
      timeout: 5s
      retries: 5
    networks:
      - backend

  # ── Redis ────────────────────────────────────────────────────────────────────
  redis:
    image: redis:7-alpine
    container_name: auth_redis
    restart: unless-stopped
    command: redis-server --appendonly yes
    ports:
      - "6379:6379"
    volumes:
      - redis_data:/data
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 10s
      timeout: 5s
      retries: 5
    networks:
      - backend

volumes:
  postgres_data:
  redis_data:

networks:
  backend:
    driver: bridge