feat: update README files for Docker related changes

Author: SkyBird233

README.md

@@ -55,6 +55,12 @@ If you need to test the paste page, please set `PASTE_API=http://localhost:2334`
 in your environmental variables or the `.env` file. For the deployment of
 paste-server-rs, please refer to [website-utils](https://github.com/AOSC-Dev/website-utils).
 
+If you need to test nginx related configuration or test the complete preview in
+an independent environment, please use:
+```
+docker compose up --build
+```
+
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README.zh-cn.md

@@ -40,7 +40,12 @@ npm run generate
 npm run preview
 ```
 
-如果您需要测试剪贴板页面，请创建并修改 `.env` 文件或直接设置环境变量 `PASTE_API=http://localhost:2334`。对于 paste-server-rs 的部署请参考 [website-utils](https://github.com/AOSC-Dev/website-utils)
+如果您需要测试剪贴板页面，请创建并修改 `.env` 文件或直接设置环境变量 `PASTE_API=http://localhost:2334`。对于 paste-server-rs 的部署请参考 [website-utils](https://github.com/AOSC-Dev/website-utils)。
+
+如果您需要测试 nginx 相关配置或在独立环境测试完整预览，请使用：
+```
+docker compose up --build
+```
 
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