Fix gitlab ci timeout: do not run dockers inside docker

Change-Id: Ic8db923424f920ece37df71c063efca1339c25e1
diff --git a/app/build.gradle b/app/build.gradle
index 42fadbd..93819ce 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -19,6 +19,7 @@
     
     // Enable parallel test execution for faster builds
     maxParallelForks = Runtime.runtime.availableProcessors().intdiv(2) ?: 1
+    systemProperty 'korapxmltool.test', 'true'
 }
 
 dependencies {