more sensible default case

Author: lemeurherve

Jenkinsfile

@@ -11,28 +11,32 @@ properties([
 def agentSelector(String imageType, spotRetryCounter) {
     def platform
     switch (imageType) {
-        // Linux
-        case ~/linux|alpine*|debian*|rhel*/:
-            // Need Docker and a LOT of memory for faster builds (due to multi archs)
-            platform = 'docker-highmem'
-            break
-
-        // TODO: to be removed later cf https://github.com/jenkins-infra/helpdesk/issues/4954
-        // nanoserver 1809, ltsc2019 and windowservercore ltsc2019
+        // TODO: to be removed later, when Windows 2019 support is dropped
+        // cf https://github.com/jenkins-infra/helpdesk/issues/4954
+        // nanoserver-1809, nanoserver-ltsc2019 and windowservercore-ltsc2019
         case ~/.*9/:
             platform = 'windows-2019'
             break
 
-        // TODO: to be removed later cf https://github.com/jenkins-infra/helpdesk/issues/4956
-        // nanoserver ltsc2022 and windowservercore ltsc2022
+        // TODO: to be removed later, when using Windows 2025 agents by default
+        // cf https://github.com/jenkins-infra/helpdesk/issues/4956
+        // nanoserver-ltsc2022 and windowservercore-ltsc2022
         case ~/.*2/:
             platform = 'windows-2022'
             break
 
-        // Build on Windows 2025 agent by default
-        default:
+        // TODO: to be replaced by ~/*server*/, when using Windows 2025 agents by default for Windows images
+        // cf https://github.com/jenkins-infra/helpdesk/issues/4956
+        // nanoserver-ltsc2025 and windowservercore-ltsc2025
+        case ~/.*5/:
             platform = 'windows-2025'
             break
+
+        // Linux
+        default:
+            // Need Docker and a LOT of memory for faster builds (due to multi archs)
+            platform = 'docker-highmem'
+            break
     }
 
     // Defined in https://github.com/jenkins-infra/pipeline-library/blob/master/vars/infra.groovy