(Workflow) initial

.github/workflows/setup.yml

@@ -32,4 +32,10 @@ jobs:
       run: |
         cd $env:INSTALLER_DIR
         .\APInstaller.CLI.exe --selfUpdate
-    
+        if ($LASTEXITCODE -eq 1) {
+          Write-Host "No update available. Exiting with code 0 as success."
+          $LASTEXITCODE = 0
+        }
+        if ($LASTEXITCODE -ne 0) {
+          throw "Update failed with exit code $LASTEXITCODE."
+        }