Update Dockerfile

Dockerfile

@@ -8,7 +8,7 @@ RUN conda config --add channels conda-forge
 RUN conda config --set channel_priority strict
 
 COPY environment.yml /home/jovyan/ 
-RUN mamba env update -n base -f /home/jovyan/environment.yml
+RUN conda env update -n base -f /home/jovyan/environment.yml
 # using ~/.bash_profile instead of ~/.bashrc for non-interactive tty (-it) containers
 RUN echo ". /opt/conda/etc/profile.d/conda.sh" >> /home/jovyan/.bash_profile && \
     echo "conda deactivate" >> /home/jovyan/.bash_profile && \