Phase 7: Hoàn thiện Modular RAG Backend với FastAPI và Đa LLM Provider

docker-compose.yml

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+version: '3.8'
+
+services:
+  # 1. OpenSearch: Vector & Full-text Search Engine
+  opensearch:
+    image: opensearchproject/opensearch:2.11.1
+    container_name: poc_opensearch
+    environment:
+      - discovery.type=single-node
+      - OPENSEARCH_INITIAL_ADMIN_PASSWORD=Admin123!@#
+      - bootstrap.memory_lock=true
+      - "OPENSEARCH_JAVA_OPTS=-Xms512m -Xmx512m"
+      - DISABLE_SECURITY_PLUGIN=true # Tạm tắt security plugin để dev dễ dàng (không cần HTTPS/certs phức tạp)
+    ulimits:
+      memlock:
+        soft: -1
+        hard: -1
+      nofile:
+        soft: 65536
+        hard: 65536
+    ports:
+      - "9200:9200"
+      - "9600:9600"
+    volumes:
+      - opensearch-data:/usr/share/opensearch/data
+    networks:
+      - poc_network
+
+  # 2. OpenSearch Dashboards: Giao diện web quản lý Index (Tùy chọn nhưng rất tiện)
+  opensearch-dashboards:
+    image: opensearchproject/opensearch-dashboards:2.11.1
+    container_name: poc_os_dashboards
+    environment:
+      - OPENSEARCH_HOSTS=http://opensearch:9200
+      - DISABLE_SECURITY_DASHBOARDS_PLUGIN=true
+    ports:
+      - "5601:5601"
+    depends_on:
+      - opensearch
+    networks:
+      - poc_network
+
+  # 3. Backend App: Ứng dụng Python Ingestion & Search
+  backend:
+    build: .
+    container_name: poc_backend
+    volumes:
+      - .:/app # Mount source code để sửa code nhận ngay không cần rebuild
+    ports:
+      - "8000:8000"
+    environment:
+      - OPENSEARCH_HOST=opensearch
+      - OPENSEARCH_PORT=9200
+      # Các biến môi trường khác sẽ được mount từ file .env local
+    env_file:
+      - .env
+    depends_on:
+      - opensearch
+    networks:
+      - poc_network
+
+volumes:
+  opensearch-data:
+
+networks:
+  poc_network:
+    driver: bridge