From 97150a573db13bb4df1d622a480bfb13c9cba4ee Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Herv=C3=A9=20Le=20Meur?=
 <91831478+lemeurherve@users.noreply.github.com>
Date: Tue, 30 Apr 2024 18:52:04 +0200
Subject: [PATCH] fix: set jlink compression arg to `zip-6` for Windows jdk21
 image (#1864)

---
 windows/windowsservercore/hotspot/Dockerfile | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/windows/windowsservercore/hotspot/Dockerfile b/windows/windowsservercore/hotspot/Dockerfile
index a570ce5a04..442c532e6b 100644
--- a/windows/windowsservercore/hotspot/Dockerfile
+++ b/windows/windowsservercore/hotspot/Dockerfile
@@ -25,10 +25,15 @@ RUN Write-Host 'javac --version' ; javac --version ; `
 
 RUN $version = (jlink --version) ; `
     $stripJavaDebugFlags = '--strip-java-debug-attributes' ; `
+    $compressArg = '--compress=2' ; `
     # jlink version 11 has less features than JDK17+
     if ($version.StartsWith('11')) { `
         $stripJavaDebugFlags = '--strip-debug' ; `
     } `
+    # jlink version 11 has less features than JDK17+
+    if ($version.StartsWith('21')) { `
+        $compressArg = '--compress=zip-6' ; `
+    } `
     & jlink `
     --add-modules ALL-MODULE-PATH `
     $stripJavaDebugFlags `