Create a Azure VMSS using a VHD as in a blob storage

Question

I'm trying to create a VMSSS for out of a vhd saved in a blob storage.

Microsoft has open sourced the code used to create a VM for Microsoft Hosted Agents use in Azure Pipelines. The guid for creating the VM is here

I've followed the instruction to the point where it creates a VHD in blob store.

"image": {
              "uri": "https://msftazureblobgstore.blob.core.windows.net/system/Microsoft.Compute/Images/images/packer-osDisk.cfd5eba0-ac4c-4a33-b1eb-4e7f960387a3.vhd"
            },
            "vhd": {
              "uri": "https://msftazureblobgstore.blob.core.windows.net/vmcontainerec417fa8-1f52-46e1-ab32-0e07c37e8b13/osDisk.ec417fa8-1f52-46e1-ab32-0e07c37e8b13.vhd"
            },

What i would like to do next is create a VMSS that refers this VHD .