devcontainers/universal-base/.devcontainer/local-features/nvs/devcontainer-feature.json

{
    "id": "nvs",
    "name": "Node Version Switcher",
    "containerEnv": {
        "NVS_DIR": "/usr/local/nvs",
        "PATH": "${NVS_DIR}:${PATH}"
    },
    "install": {
        "app": "",
        "file": "install.sh"
    }
}