diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8cdc202fa31ca84857e8fa90d13ad3883bf94c30..31eee7cbc6675769534d422bf53fe1483bb6d30d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -24,7 +24,7 @@ variables:
 build_image:
   stage: build
   image:
-    name: gcr.io/kaniko-project/executor:latest
+    name: gcr.io/kaniko-project/executor:debug
     entrypoint: [""]
   before_script:
     - |
diff --git a/Dockerfile b/Dockerfile
index 3bd5c7100deaed3a6550d1bdff9186d80197487f..5dd8afe3c3b54c47f7974dd2ee5b22cee4158a0e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,5 @@
 FROM ibm-semeru-runtimes:open-17.0.7_7-jdk
-RUN ls
-# RUN mkdir /opt/shareclasses
+RUN sudo mkdir /opt/shareclasses
 # RUN mkdir -p /opt/openslice/lib/
 # COPY target/org.etsi.osl.tmf.api-1.2.0-SNAPSHOT-exec.jar /opt/openslice/lib/
 # CMD ["java", "-Xshareclasses:cacheDir=/opt/shareclasses", "-jar", "/opt/openslice/lib/org.etsi.osl.tmf.api-1.2.0-SNAPSHOT-exec.jar"]