Maybe its done now?

.gitlab-ci.yml

@@ -25,8 +25,21 @@ uptool:
     $file = Get-Item $(Resolve-Path .\build\*.exe).Path
     $asm = $([Reflection.Assembly]::LoadFile($file.DirectoryName + "\" + $file.BaseName + ".dll"))
     $asmver = $asm.GetName().Version.ToString()
+    [System.XML.XMLDocument]$xml=New-Object System.XML.XMLDocument
+    [System.XML.XMLElement]$app=$xml.CreateElement("app")
+    $xml.appendChild($app)
+    $app.appendChild($xml.CreateElement("Name")).InnerText = $asm.GetName().Name
+    $app.appendChild($xml.CreateElement("Description")).InnerText = "Calculate grades for students"
+    $app.appendChild($xml.CreateElement("Version")).InnerText = "${{ steps.base_init.outputs.vers }}"
+    $app.appendChild($xml.CreateElement("ID")).InnerText = "c8119098-ec7f-4fb3-8668-9e81915b112d"
+    $app.appendChild($xml.CreateElement("File")).InnerText = "${{ steps.upload_release_asset.outputs.browser_download_url }}"
+    $app.appendChild($xml.CreateElement("Hash")).InnerText = $(Get-FileHash .\package.zip).Hash
+    $app.appendChild($xml.CreateElement("MainFile")).InnerText = $file.Name
+    echo NULL > app.xml
+    $xml.save($(gi .\app.xml).Fullname)
   artifacts:
     paths:
-      - build
+      - package.zip
+      - app.xml
   only:
     - master