Install graphviz and pydot via conda in container

Author: ethho

Dockerfile

@@ -2,7 +2,7 @@ ARG PY_VER=3.9
 ARG IMAGE=jupyter/docker-stacks-foundation
 FROM ${IMAGE}
 USER jovyan
-RUN conda install -y -n base -c conda-forge python=${PY_VER} pydot networkx && \
+RUN conda install -y -n base -c conda-forge python=${PY_VER} graphviz pydot && \
     conda clean -afy
 COPY --chown=1000:100 ./pyproject.toml ./README.md ./LICENSE.txt ./datajoint.pub /main/
 COPY --chown=1000:100 ./datajoint /main/datajoint