Packer json file to create a windows host on Azure and run commands to sysprep and activate a web server on the subsequent host

windowspacker.json

{
    "builders": [{
      "type": "azure-arm",
  
      "client_id": "<client id here>",
      "client_secret": "<client secret here>",
      "tenant_id": "<tennant id here",
      "subscription_id": "<subscription id here>",
  
      "managed_image_resource_group_name": "myPackerGroup",
      "managed_image_name": "myPackerImage",


      "managed_image_resource_group_name": "packer_images",
      "managed_image_name": "myWindowsPackerImage",
  
      "os_type": "Windows",
      "image_publisher": "MicrosoftWindowsServer",
      "image_offer": "WindowsServer",
      "image_sku": "2016-Datacenter",
  
      "communicator": "winrm",
      "winrm_use_ssl": true,
      "winrm_insecure": true,
      "winrm_timeout": "5m",
      "winrm_username": "packer",
  
      "azure_tags": {
          "dept": "Engineering",
          "task": "Image deployment"
      },
  
      "location": "westeurope",
      "vm_size": "Standard_DS2_v2"
    }],
    "provisioners": [{
      "type": "powershell",
      "inline": [
        "Add-WindowsFeature Web-Server",
        "& $env:SystemRoot\\System32\\Sysprep\\Sysprep.exe /oobe /generalize /quiet /quit",
        "while($true) { $imageState = Get-ItemProperty HKLM:\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Setup\\State | Select ImageState; if($imageState.ImageState -ne 'IMAGE_STATE_GENERALIZE_RESEAL_TO_OOBE') { Write-Output $imageState.ImageState; Start-Sleep -s 10  } else { break } }"
      ]
    }]
  }