Use OpenJ9 instead of HotSpot.

Change-Id: I540ab722070dc73efb720d989493233551b8d689
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
index 9930432..6c2146e 100644
--- a/src/main/resources/application.properties
+++ b/src/main/resources/application.properties
@@ -70,8 +70,9 @@
 quarkus.container-image.name = mulkcms2
 quarkus.container-image.registry = docker.benkard.de
 
-quarkus.jib.base-jvm-image = adoptopenjdk:14-jre-hotspot
-quarkus.jib.jvm-arguments = -XX:+UnlockExperimentalVMOptions,-XX:+UseShenandoahGC,-XX:ShenandoahGCHeuristics=compact
+#quarkus.jib.base-jvm-image = adoptopenjdk:14-jre-hotspot
+#quarkus.jib.jvm-arguments = -XX:+UnlockExperimentalVMOptions,-XX:+UseShenandoahGC,-XX:ShenandoahGCHeuristics=compact
+quarkus.jib.base-jvm-image = adoptopenjdk:14-jre-openj9
 
 quarkus.native.container-runtime = docker