feat: 更新 Dockerfile 安装 Playwright，更新 README 文档

docker-compose.yml

@@ -5,10 +5,17 @@ services:
     build: .
     container_name: saleshow-app
     ports:
-      - "${APP_PORT:-5000}:5000" # 映射主机端口:容器端口，支持通过 APP_PORT 环境变量修改主机端口
+      - "${APP_PORT:-5000}:5000"
     environment:
       - PORT=5000
       - FLASK_DEBUG=False
+      - SECSION_USERNAME=${SECSION_USERNAME:-}
+      - SECSION_PASSWORD=${SECSION_PASSWORD:-}
+      - SCHEDULER_ENABLED=${SCHEDULER_ENABLED:-true}
+      - SCHEDULER_HOUR=${SCHEDULER_HOUR:-1}
+      - SCHEDULER_MINUTE=${SCHEDULER_MINUTE:-0}
     volumes:
-      - ./uploads:/app/uploads # 挂载上传目录，持久化数据
+      - ./uploads:/app/uploads
+      - ./data:/app/data
+      - ./downloads:/app/downloads
     restart: unless-stopped