Refactor Docker setup and enhance file transfer progress handling. Updated Dockerfile for multi-stage builds, modified docker-compose.yml to include image and container name, and improved progress bar functionality in app.js for better user feedback during file transfers.

run.bat

@@ -0,0 +1,16 @@
+@echo off
+chcp 65001 >nul
+REM 一键运行：拉代码后执行 run.bat 即可
+REM 需要本机已安装 Docker 和 Docker Compose
+
+cd /d "%~dp0"
+
+echo ^>^>^> 构建并启动 SFTP Manager...
+docker compose up -d --build
+
+echo.
+echo ^>^>^> 启动完成。
+echo     访问地址: http://localhost:48081/sftp-manager
+echo     停止服务: docker compose down
+echo.
+pause