Removes mounted ISOs when parent VHD/X image creation fails

Fixes #166

Readme.md

@@ -97,6 +97,7 @@ Other generous members of the community have written some comprehensive guides t
 * Permits overriding VM generation with the Media\CustomData\VmGeneration property (#194)
 * Adds -RepositoryUri parameter to Set-LabHostDefault to support internal repositories (partially implements #195)
 * Changes default PowerShell gallery URI to HTTPS
+* Removes mounted ISOs when parent VHD/X image creation fails (#166)
 
 ### v0.10.2
 

Src/Private/Add-LabImageOptionalFeature.ps1

@@ -0,0 +1,43 @@
+function Add-LabImageWindowsOptionalFeature {
+<#
+    .SYMOPSIS
+        Enables Windows optional features to an image.
+#>
+    [CmdletBinding()]
+    param (
+        ## Source package file path
+        [Parameter(Mandatory, ValueFromPipeline)]
+        [ValidateNotNullOrEmpty()]
+        [System.String] $ImagePath,
+
+        ## Mounted VHD(X) Operating System disk drive
+        [Parameter(Mandatory, ValueFromPipelineByPropertyName)]
+        [ValidateNotNullOrEmpty()]
+        [System.String] $DestinationPath,
+
+        ## Windows packages to add to the image after expansion
+        [Parameter(Mandatory, ValueFromPipelineByPropertyName)]
+        [ValidateNotNull()]
+        [System.String[]] $WindowsOptionalFeature,
+
+        ## DISM log path
+        [Parameter()]
+        [ValidateNotNullOrEmpty()]
+        [System.String] $LogPath = $DestinationPath
+    )
+    process {
+
+        WriteVerbose ($localized.AddingWindowsFeature -f ($WindowsOptionalFeature -join ','), $DestinationPath);
+        $enableWindowsOptionalFeatureParams = @{
+            Source = $ImagePath;
+            Path = $DestinationPath;
+            LogPath = $LogPath;
+            FeatureName = $WindowsOptionalFeature;
+            LimitAccess = $true;
+            All = $true;
+            Verbose = $false;
+        }
+        $dismOutput = Microsoft.Dism.Powershell\Enable-WindowsOptionalFeature @enableWindowsOptionalFeatureParams;
+
+    } #end process
+} #end function Add-LabImageWindowsOptionalFeature