Request to provide Dockerfile source code for Nvidia driver installation on COS

Would it be possible for repo maintainers to provide the Dockerfile and any scripts used to generate the image by this daemonset? https://github.com/GoogleCloudPlatform/container-engine-accelerators/blob/master/nvidia-driver-installer/cos/daemonset-nvidia-v450.yaml

The reason for this request is, I'd like to install a specific version (470.57.02) of Nvidia drivers on a GKE cluster running container-optimized OS with containerd. The official GKE documentation provides [this daemonset](https://raw.githubusercontent.com/GoogleCloudPlatform/container-engine-accelerators/master/nvidia-driver-installer/cos/daemonset-preloaded.yaml), which installs an older driver version. I assume [daemonset-nvidia-v450.yaml](https://github.com/GoogleCloudPlatform/container-engine-accelerators/blob/master/nvidia-driver-installer/cos/daemonset-nvidia-v450.yaml) in this repo can be modified to install a specific driver, by changing this line to an appropriate image:
```
- image: gcr.io/cos-cloud/cos-gpu-installer@sha256:93f1abf0d6a27e14bebf43ffb00b8d819b20f6027012ad73306ba670bcac6c83
```
However, I cannot find the source code for this image, so it is not clear how I can install a different Nvidia driver version.

For example, for GKE ubuntu images, this repo provides the [Dockerfile](https://github.com/GoogleCloudPlatform/container-engine-accelerators/blob/master/nvidia-driver-installer/ubuntu/Dockerfile) and [entrypoint.sh](https://github.com/GoogleCloudPlatform/container-engine-accelerators/blob/master/nvidia-driver-installer/ubuntu/entrypoint.sh) source code. Would it be possible to share the COS equivalent?