Register-Images.ps1

Param([string]$sourceURI = $(Read-Host -prompt "Specify the full URL to the source blob"),
      [string]$storageId = $(Read-Host -prompt "Specify the full storage account ARM-ID"),
      [string]$location  = $(Read-Host -prompt "Specify the source location"),
      [string]$imageName = $(Read-Host -prompt "Specify the image name"))


$RGName="Images"
$location = $location.Replace(' ','')
$snapName=$imageName+$location+"-snap"
$imageNameRegional=$imageName+$location

$subscriptions=Get-AzureRmSubscription

foreach ($sub in $subscriptions){
    
    Set-AzureRmContext -Subscription $sub.Name
    $ctx = Get-AzureRmContext

    Start-Job {param ($ctx,$sub,$location,$sourceURI,$storageId,$RGName,$snapName,$imageNameRegional) 
        
        #
        # Create a snapshot from the remote blob
        #
        write-host "Creating Snapshot"
        $snapshotConfig = New-AzureRmSnapshotConfig -AccountType StandardLRS `
                                                    -OsType Windows `
                                                    -Location $location `
                                                    -CreateOption Import `
                                                    -SourceUri $sourceURI `
                                                    -StorageAccountId $storageId 

        $snap = New-AzureRmSnapshot -AzureRmContext $ctx `
                                    -ResourceGroupName $RGName `
                                    -SnapshotName $snapName `
                                    -Snapshot $snapshotConfig 
                             
        #
        # Create an image from the snapshot
        #
        write-host "Creating Image from Snapshot"
        $imageConfig = New-AzureRmImageConfig -Location $location 

        Set-AzureRmImageOsDisk -Image $imageConfig `
                               -OsType Windows `
                               -OsState Generalized `
                               -SnapshotId $snap.Id 

        New-AzureRmImage -AzureRmContext $ctx `
                         -ResourceGroupName $RGName `
                         -ImageName $imageNameRegional `
                         -Image $imageConfig
                         
        #
        # Cleanup snapshot
        #
        write-host "Deleting Snapshot"
        Remove-AzureRmSnapshot -AzureRmContext $ctx -ResourceGroupName $RGName -SnapshotName $snapName -force                    

    } -ArgumentList $ctx,$sub,$location,$sourceURI,$storageId,$RGName,$snapName,$imageNameRegional
}