Workspace path error when using Docker Desktop for Mac with VSCode devcontainers extension

`azd up` fails when using Docker Desktop for Mac (4.36.0, default settings) with VSCode devcontainers extension:

```bash
✔ Container azure-postgres-pgvector-python_devcontainer-db-1 Started1.0s
⠙ Container azure-postgres-pgvector-python_devcontainer-app-1 Starting0.4s
Error response from daemon: Mounts denied:
The path /workspaces/azure-postgres-pgvector-python is not shared from the host and is not known to Docker.
You can configure shared paths from Docker -> Preferences... -> Resources -> File Sharing.
See https://docs.docker.com/desktop/settings/mac/#file-sharing for more info.
```

"Settings" -> "Resources" -> "File sharing" shows `/tmp` is shared by default.

先使用 Docker Desktop for Mac 和 VSCode devcontainers extension 重現 `azd up`，接著檢查儲存庫的 devcontainer 設定和 Docker 檔案共用設定。當應用程式容器啟動時不再出現 `/workspaces/azure-postgres-pgvector-python` mount-denied 錯誤，即表示完成。

由索引模型根據 Issue 內容生成。