feat: APISIX gateway with Docker Compose orchestration for stock microservices

- APISIX declarative config with versioned API routes (/api/v1/{service}/...)
- proxy-rewrite for path transformation, CORS global rule, rate limiting (100 req/s)
- Active health checks on all 6 upstream services
- Docker Compose with 11 containers: Redis, PostgreSQL, MongoDB, 6 Python services, APISIX, Next.js frontend
- Environment config via .env.example

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -0,0 +1,169 @@
+version: "3.8"
+
+x-common-env: &common-env
+  REDIS_URL: redis://redis:6379/0
+  POSTGRES_HOST: postgres
+  POSTGRES_PORT: "5432"
+  POSTGRES_DB: stockdb
+  POSTGRES_USER: stock
+  POSTGRES_PASSWORD: stock
+  MONGODB_URI: mongodb://mongo:27017
+  MONGODB_DB: stock_analysis
+  LOG_LEVEL: INFO
+  LOG_FORMAT: json
+
+services:
+  # ─── Infrastructure ───────────────────────────────────
+  redis:
+    image: redis:7-alpine
+    ports:
+      - "6379:6379"
+    volumes:
+      - redis-data:/data
+    command: redis-server --appendonly yes
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 5s
+      retries: 3
+
+  postgres:
+    image: timescale/timescaledb:latest-pg16
+    environment:
+      POSTGRES_USER: stock
+      POSTGRES_PASSWORD: stock
+      POSTGRES_DB: stockdb
+    ports:
+      - "5432:5432"
+    volumes:
+      - pg-data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U stock"]
+      interval: 5s
+      retries: 3
+
+  mongo:
+    image: mongo:7
+    ports:
+      - "27017:27017"
+    volumes:
+      - mongo-data:/data/db
+    healthcheck:
+      test: ["CMD", "mongosh", "--eval", "db.runCommand('ping').ok"]
+      interval: 5s
+      retries: 3
+
+  # ─── API Gateway ──────────────────────────────────────
+  apisix:
+    image: apache/apisix:3.8.0-debian
+    ports:
+      - "9080:9080"    # API Gateway
+      - "9091:9091"    # Prometheus metrics
+    volumes:
+      - ./apisix/conf/config.yaml:/usr/local/apisix/conf/config.yaml:ro
+      - ./apisix/conf/apisix.yaml:/usr/local/apisix/conf/apisix.yaml:ro
+    depends_on:
+      - stock-dart-collector
+      - stock-kis-collector
+      - stock-news-crawler
+      - stock-screener
+      - stock-catalyst
+      - stock-llm-analyzer
+
+  # ─── Microservices ────────────────────────────────────
+  stock-dart-collector:
+    build:
+      context: ..
+      dockerfile: stock-dart-collector/Dockerfile
+    environment:
+      <<: *common-env
+      DART_API_KEY: ${DART_API_KEY}
+    ports:
+      - "8001:8001"
+    depends_on:
+      redis:
+        condition: service_healthy
+
+  stock-kis-collector:
+    build:
+      context: ..
+      dockerfile: stock-kis-collector/Dockerfile
+    environment:
+      <<: *common-env
+      KIS_APP_KEY: ${KIS_APP_KEY}
+      KIS_APP_SECRET: ${KIS_APP_SECRET}
+      KIS_BASE_URL: ${KIS_BASE_URL:-https://openapivts.koreainvestment.com:9443}
+    ports:
+      - "8002:8002"
+    depends_on:
+      redis:
+        condition: service_healthy
+
+  stock-news-crawler:
+    build:
+      context: ..
+      dockerfile: stock-news-crawler/Dockerfile
+    environment:
+      <<: *common-env
+    ports:
+      - "8003:8003"
+    depends_on:
+      redis:
+        condition: service_healthy
+
+  stock-screener:
+    build:
+      context: ..
+      dockerfile: stock-screener/Dockerfile
+    environment:
+      <<: *common-env
+    ports:
+      - "8004:8004"
+    depends_on:
+      redis:
+        condition: service_healthy
+      postgres:
+        condition: service_healthy
+
+  stock-catalyst:
+    build:
+      context: ..
+      dockerfile: stock-catalyst/Dockerfile
+    environment:
+      <<: *common-env
+    ports:
+      - "8005:8005"
+    depends_on:
+      redis:
+        condition: service_healthy
+      mongo:
+        condition: service_healthy
+
+  stock-llm-analyzer:
+    build:
+      context: ..
+      dockerfile: stock-llm-analyzer/Dockerfile
+    environment:
+      <<: *common-env
+      ANTHROPIC_API_KEY: ${ANTHROPIC_API_KEY}
+    ports:
+      - "8006:8006"
+    depends_on:
+      redis:
+        condition: service_healthy
+
+  # ─── Frontend ─────────────────────────────────────────
+  stock-frontend:
+    build:
+      context: ../stock-frontend
+      dockerfile: Dockerfile
+      args:
+        NEXT_PUBLIC_API_URL: http://localhost:9080/api/v1
+    ports:
+      - "3000:3000"
+    depends_on:
+      - apisix
+
+volumes:
+  redis-data:
+  pg-data:
+  mongo-data: