added SQL Express install step

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

@@ -0,0 +1,20 @@
+#Download web-installer
+$installerUrl = "https://go.microsoft.com/fwlink/?linkid=866658"
+$installerName = "SQL2019-SSEI-Expr.exe"
+$installerPath = "${env:Temp}\$installerName"
+Write-Host "Download web-installer"
+(New-Object System.Net.WebClient).DownloadFile($installerUrl, $installerPath)
+#use web-installer to download setup package
+$downloadPath = "C:\SQLEXPRESS2019"
+$setupPath = Join-Path $downloadPath "SQLEXPR_x64_ENU"
+$downloadArgs = ("/MEDIAPATH=$downloadPath", "/MEDIATYPE=Core","/Action=Download", "/QUIET")
+$installArgs = ("/Q", "/IACCEPTSQLSERVERLICENSETERMS")
+$args = ("/Q", "/IACCEPTSQLSERVERLICENSETERMS", "/Action=Install", "/INSTANCEID=SQL2020", "/INSTANCENAME=SQL2020", "/SECURITYMODE=SQL", "/SAPWD=P@ssword!!", "/TCPENABLED=1")
+Write-Host "Downloading SQL Express setup package"
+Start-Process -FilePath $installerPath -ArgumentList $downloadArgs -Wait -PassThru
+#Unpack and run setup-package
+Set-Location -Path $downloadPath
+Write-Host "Unpack SQL Express setup package"
+Start-Process -FilePath "$setupPath.exe" -ArgumentList $installArgs -Wait -PassThru
+Write-Host "Run SQL Express setup package"
+Start-Process -FilePath "$setupPath/SETUP.exe" -ArgumentList $args -Wait -PassThru

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

@@ -0,0 +1,15 @@
+$sqlConn = New-Object System.Data.SqlClient.SqlConnection
+$sqlConn.ConnectionString = "Server=$env:computername\SQL2019;Integrated Security=false;User ID=sa; Password=P@ssword!!"
+$sqlConn.Open()
+$str1=""
+$sqlConn.State
+IF (Compare-Object $sqlConn.State $str1)
+{
+Write-Host "Failed attempt"
+exit 1
+}
+ELSE
+{
+Write-Host "Success"
+exit 0
+}