fix(docker): multi-theme packaging with PS1 orchestration and full bundle export

Replace all-themes bat logic with PowerShell to survive branch checkout; add api-admin and full-themes service modes; fix bat findstr path check and cmd exit codes; document six-in-one tar and update gitignore for player/full-themes artifacts.

docs/四套主题Docker部署任务.md

@@ -276,7 +276,18 @@ pnpm dev:player           # http://localhost:5173 目视确认仍是本主题皮
 
 ## 六、构建与上传镜像
 
-### 6.1 四个 player 镜像（Windows CMD）
+### 6.1 四个 player 镜像
+
+**一键打包（推荐，仅 `main` 分支提供脚本）：**
+
+```powershell
+cd C:\path\to\thebet365
+.\docs\docker\build-and-export-all-themes.ps1 -SkipApiAdmin
+```
+
+或 `docs\docker\build-and-export-all-themes.bat --skip-api-admin`（内部转调 PowerShell，避免切分支后 bat 从磁盘消失）。
+
+**手动逐步（Windows CMD）：**
 
 ```bat
 cd C:\path\to\thebet365