Update Dockerfile

change from anaconda community to conda-forge for conda install (commented out)

Dockerfile

@@ -77,7 +77,7 @@ RUN pip install scikit-learn
 # ENV PATH=/opt/miniconda/bin:$PATH
 
 # install tensorflow and torch
-# RUN conda install -c anaconda cudatoolkit=11.2 cudnn -y && \
+# RUN conda install -c conda-forge cudatoolkit=11.2 cudnn -y && \
 #     pip install tensorflow==2.6
 
 # ARG TORCH_VER="1.7.1+cu101"