feat: Add Docker deployment support

- Updated Dockerfile to use npm instead of pnpm
- Added .dockerignore for optimized builds
- Created docker-compose.yml for easy deployment
- Added comprehensive Docker deployment guide
- Configured health checks and data persistence
- Ready for containerized deployment

docker-compose.yml

@@ -0,0 +1,31 @@
+version: '3.8'
+
+services:
+  suanming-app:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    ports:
+      - "8000:8000"
+    environment:
+      - NODE_ENV=production
+      - PORT=8000
+      - JWT_SECRET=${JWT_SECRET:-your-super-secret-jwt-key-change-this-in-production}
+    volumes:
+      # 持久化数据库文件
+      - suanming-data:/app/data
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:8000/api/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 40s
+
+volumes:
+  suanming-data:
+    driver: local
+
+networks:
+  default:
+    name: suanming-network