Move root to main mamba install

Dockerfile

@@ -105,6 +105,7 @@ RUN conda config --set default_threads 4 && \
   pyspellchecker \
   pyvista \
   rdkit \
+  root \
   sinfo \
   scanpy \
   scikit-image \
@@ -206,10 +207,6 @@ RUN PIP_PROXY=http://proxy.ethz.ch:3128 pip3 install --proxy=http://proxy.ethz.c
 #  package_1 \
 #  package_last
 
-RUN conda config --set default_threads 4 && \
-  mamba install -q -c defaults -c conda-forge \
-  root
-
 # User submitted support programs
 COPY bin /usr/local/bin/