features/test-scenarios/scenarios.json

{
    "install_jupyterlab": {
        "image": "mcr.microsoft.com/vscode/devcontainers/base:focal",
        "remoteUser": "vscode",
        "features": {
            "common": {
                "username": "vscode"
            },
            "python": {
                "install_jupyterlab": true,
                "configure_jupyterlab_allow_origin": "*"
            }
        }
    }
}