diff --git a/Dockerfile b/Dockerfile
index 91a7641..6a7d2ab 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -36,6 +36,9 @@
 # will be used by attached slave agents:
 EXPOSE 50000
 
+ENV COPY_REFERENCE_FILE_LOG /var/log/copy_reference_file.log
+RUN touch $COPY_REFERENCE_FILE_LOG && chown jenkins.jenkins $COPY_REFERENCE_FILE_LOG
+
 USER jenkins
 
 COPY jenkins.sh /usr/local/bin/jenkins.sh