diff --git a/Dockerfile b/Dockerfile
index ec8900c..436042d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -75,11 +75,12 @@ RUN apt-get install -y git
 RUN python3 -m pip install ipython
 RUN apt-get install -y tk # for dawn
 
+# add jupyter packages for UC2 on top so they don't need to be installed every time
+RUN python3 -m pip install jupyterlab jupyterhub==3.1.1 batchspawner
+RUN ln -s /usr/bin/python3 /usr/bin/python
+
+#finally the package
 ARG INCUBATOR_VER
 ADD minicalosim /root/minicalosim
 RUN cd  && cd minicalosim && mkdir build && cd build && cmake ../ && make -j4 &&\  
     cp minicalo* ../bind/G4Calo.py /usr/local/lib/python3.8/dist-packages/
-
-# add jupyter packages for UC2 on top so they don't need to be installed every time
-RUN python3 -m pip install jupyterlab jupyterhub==3.1.1 batchspawner
-RUN ln -s /usr/bin/python3 /usr/bin/python
\ No newline at end of file