--- a/tests/tools/Docker/Dockerfile	Thu Dec 15 14:45:52 2022 +0100
+++ b/tests/tools/Docker/Dockerfile	Thu Dec 15 14:46:48 2022 +0100
@@ -54,6 +54,7 @@
     ) | install /dev/stdin /usr/local/bin/sikulix
 
 
+# easy to remember 'do_tests' alias to invoke main makefile
 RUN env echo -e '#!/bin/bash\nmake -f /home/testing/src/beremiz/tests/Makefile $*' > /usr/local/bin/do_tests
 RUN chmod +x /usr/local/bin/do_tests
 
@@ -82,8 +83,3 @@
 # Points to python binary that test will use
 ENV BEREMIZPYTHONPATH /home/$UNAME/beremizenv/bin/python
 
-# easy to remember 'do_tests' alias to invoke main makefile
-ARG OWNDIRBASENAME=beremiz
-ENV OWNDIRBASENAME ${OWNDIRBASENAME}
-
-