small changes for scripts.

images/win/scripts/ImageHelpers/InstallHelpers.ps1

@@ -166,9 +166,9 @@ function Start-DownloadWithRetry
     param (
         [Parameter(Mandatory)]
         [string] $Url,
-        [string] $DownloadPath = "${env:Temp}",
         [Parameter(Mandatory)]
         [string] $Name,
+        [string] $DownloadPath = "${env:Temp}",
         [int] $retries = 20
         )
     $FilePath = Join-Path $DownloadPath $Name

images/win/scripts/Installers/Install-SQLExpress.ps1

@@ -6,6 +6,7 @@ Import-Module -Name ImageHelpers -Force;
 
 function Download-FullSQLPackage {
     param(
+        [Parameter(Mandatory)]
         [String]$InstallerPath,
         [String]$DownloadPath,
         [String]$Arguments = ("/MEDIAPATH=$DownloadPath", "/MEDIATYPE=Core","/Action=Download", "/QUIET")
@@ -26,6 +27,7 @@ function Download-FullSQLPackage {
 
 function Unpack-SQLInstaller {
     param(
+        [Parameter(Mandatory)]
         [String]$InstallPath,
         [String]$Arguments = ("/Q", "/IACCEPTSQLSERVERLICENSETERMS")
     )
@@ -46,6 +48,7 @@ function Unpack-SQLInstaller {
 
 function Start-Installer {
     param(
+        [Parameter(Mandatory)]
         [String]$InstallerPath,
         [String]$Arguments = ("/Q", "/IACCEPTSQLSERVERLICENSETERMS", "/Action=Install", "/INSTANCEID=SQL2019", "/INSTANCENAME=SQL2019", "/SECURITYMODE=SQL", "/SAPWD=P@ssword!!", "/TCPENABLED=1")
     )
@@ -69,7 +72,7 @@ $setupPath = Join-Path $downloadPath "SQLEXPR_x64_ENU"
 #Create directory for temporary files
 md $downloadPath
 Set-Location -Path $downloadPath
-$installerPath = Start-DownloadWithRetry -Url "https://go.microsoft.com/fwlink/?linkid=866658" -DownloadPath $downloadPath -Name "SQL2019-SSEI-Expr.exe"
+$installerPath = Start-DownloadWithRetry -Url $installerUrl -DownloadPath $downloadPath -Name "SQL2019-SSEI-Expr.exe"
 Download-FullSQLPackage -InstallerPath $installerPath -DownloadPath $downloadPath
 Unpack-SQLInstaller -InstallPath "$setupPath.exe"
 $resultPath = Join-Path $setupPath "SETUP.exe"