Images size is too high

I was trying to use the base images from here to run Azure functions in AKS as per https://docs.microsoft.com/en-us/azure/azure-functions/functions-kubernetes-keda. But, the image size is too big for a container to run in AKS and not within the usual Microsoft recommended size (usually 500 MB) . Can the images be optimised/ minimised to have smaller size production suitable images?

```
mcr.microsoft.com/azure-functions/node 3.0-node12-slim e9b3caa41813 5 days ago 689MB
mcr.microsoft.com/azure-functions/node 3.0 e76a3b5bc828 5 days ago 959MB
mcr.microsoft.com/azure-functions/node 2.0-node12 115da2d8d28e 2 months ago 600MB
mcr.microsoft.com/azure-functions/node 2.0 1460b85a9170 2 months ago 588MB
```