Request: Local Sandbox support or dev container.

Request: Local Sandbox support or dev container.

I am not able to use this with sensitive data because there is a risk that prompt injection could exfiltrate the data. I would like to be able to turn off network egress for local containers so that I can restrict what commands get run.

As I can normally with the normal GH copilot CLI: https://docs.github.com/en/copilot/how-tos/cloud-and-local-sandboxes/configuring-local-sandbox-settings

Even better would be if I could bring my own container with my configuration to this.

---
| Field | Value |
| --- | --- |
| App version | 1.0.19 |
| OS | Windows 10.0.26200 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Day 1 |

首先查看链接的 GitHub Copilot 本地 sandbox 设置文档，以及 app 中现有的 container 或 sandbox 入口点；issue 没有指出这些内容。明确目标是禁用网络出口、支持用户提供的 container，还是两者都包括；完成内容应包括针对所选范围的、有文档说明且可用的本地配置。

由索引模型根据 Issue 内容生成。