Set-AzureRmVMExtension `
      -ResourceGroupName "Zajecia" `
      -ExtensionName "CreateFile" `
      -VMName "WinVm1" `
      -Publisher Microsoft.Compute `
      -ExtensionType CustomScriptExtension `
      -TypeHandlerVersion 1.8 `
      -SettingString '{"commandToExecute":"powershell Add-WindowsFeature Web-Server; powershell Add-Content -Path \"C:\\inetpub\\wwwroot\\Default2.htm\" -Value $($env:computername)"}' `
      -Location westeurope