chore: 添加 Docker 部署、CI 配置与部署文档

docker/.env.example

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+JWT_SECRET=your-random-secret-key-min-32-chars
+APP_ENCRYPTION_KEY=your-32-char-encryption-key
+DEFAULT_ADMIN_USERNAME=admin
+DEFAULT_ADMIN_PASSWORD=admin

docker/Dockerfile

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+# Stage 1: Build web
+FROM node:20-alpine AS web-builder
+WORKDIR /app
+COPY package*.json ./
+COPY apps/web/package*.json ./apps/web/
+COPY apps/server/package*.json ./apps/server/
+RUN npm ci
+COPY . .
+RUN npm run build -w apps/web
+
+# Stage 2: Build server
+FROM node:20-alpine AS server-builder
+WORKDIR /app
+COPY --from=web-builder /app/node_modules ./node_modules
+COPY --from=web-builder /app/package*.json ./
+COPY --from=web-builder /app/apps/web ./apps/web
+COPY --from=web-builder /app/apps/server ./apps/server
+RUN npm run build -w apps/server
+
+# Stage 3: Production
+FROM node:20-alpine
+WORKDIR /app
+ENV NODE_ENV=production
+COPY --from=server-builder /app/node_modules ./node_modules
+COPY --from=server-builder /app/package*.json ./
+COPY --from=server-builder /app/apps/server/package*.json ./apps/server/
+COPY --from=server-builder /app/apps/server/dist ./apps/server/dist
+COPY --from=server-builder /app/apps/web/dist ./apps/web/dist
+
+EXPOSE 3001
+VOLUME ["/app/apps/server/data"]
+
+CMD ["node", "apps/server/dist/index.js"]

docker/docker-compose.yml

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+version: '3.8'
+
+services:
+  vod-manager:
+    build:
+      context: ..
+      dockerfile: docker/Dockerfile
+    container_name: aliyun-vod-manager
+    ports:
+      - "3001:3001"
+    environment:
+      - PORT=3001
+      - NODE_ENV=production
+      - JWT_SECRET=${JWT_SECRET:-change-me-in-production}
+      - JWT_EXPIRES_IN=7d
+      - APP_ENCRYPTION_KEY=${APP_ENCRYPTION_KEY:-}
+      - DEFAULT_ADMIN_USERNAME=${DEFAULT_ADMIN_USERNAME:-admin}
+      - DEFAULT_ADMIN_PASSWORD=${DEFAULT_ADMIN_PASSWORD:-admin}
+      - DB_PATH=/app/apps/server/data/vod-manager.db
+    volumes:
+      - ./data:/app/apps/server/data
+    restart: unless-stopped