Avoid race condition between builders

packer/windowsserver2019.json

@@ -236,7 +236,8 @@
           " -VMName '{{user `vm_guestos`}}-{{user `vm_name`}}' \\",
           " -VSphereFQDN '{{user `vcenter_server`}}' \\",
           " -VSphereUsername '{{user `vsphere_username`}}' \\",
-          " -VSpherePassword '{{user `vsphere_password`}}'"
+          " -VSpherePassword '{{user `vsphere_password`}}' \\",
+          " -BuildName '{{build_name}}'"
         ]
       }
     ]]

scripts/Remove-Resources.ps1

@@ -7,7 +7,9 @@ Param(
     [Parameter(Mandatory)]
     [string]$VSphereUsername,
     [Parameter(Mandatory)]
-    [string]$VSpherePassword
+    [string]$VSpherePassword,
+    [Parameter(Mandatory)]
+    [string]$BuildName
 )
 
 $PowerCliConfigurationSplat = @{
@@ -43,7 +45,7 @@ If ([boolean](Get-VM @GetVMSplat)) {
 Disconnect-VIServer * -Confirm:$False
 
 $RemoveItemSplat = @{
-    Path    = '/scratch/*'
+    Path    = "/scratch/$($BuildName)/*"
     Recurse = $True
     Force   = $True
     Confirm = $False