Edit dockerfile

.binder/Dockerfile

@@ -1,7 +1,47 @@
 FROM rocker/binder:3.6.0
 LABEL maintainer='Will Landau'
 USER root
+
+ENV WORKON_HOME /opt/virtualenvs
+ENV PYTHON_VENV_PATH $WORKON_HOME/r-tensorflow
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        libpython3-dev \
+        python3-venv \
+        libzmq3-dev && \
+    rm -rf /var/lib/apt/lists/*
+
+RUN python3 -m venv ${PYTHON_VENV_PATH}
+
+RUN chown -R ${NB_USER} ${WORKON_HOME}
+
+ENV PATH ${PYTHON_VENV_PATH}/bin:${PATH}
+## And set ENV for R! It doesn't read from the environment...
+RUN echo "PATH=${PATH}" >> /usr/local/lib/R/etc/Renviron && \
+    echo "WORKON_HOME=${WORKON_HOME}" >> /usr/local/lib/R/etc/Renviron && \
+    echo "RETICULATE_PYTHON_ENV=${PYTHON_VENV_PATH}" >> /usr/local/lib/R/etc/Renviron
+
+## Because reticulate hardwires these PATHs...
+RUN ln -s ${PYTHON_VENV_PATH}/bin/pip /usr/local/bin/pip && \
+    ln -s ${PYTHON_VENV_PATH}/bin/virtualenv /usr/local/bin/virtualenv
+
+## install as user to avoid venv issues later
+USER ${NB_USER}
+RUN pip3 install \
+    h5py==2.9.0 \
+    pyyaml==3.13 \
+    requests==2.21.0 \
+    Pillow==5.4.1 \
+    tensorflow==1.12.0 \
+    tensorflow-probability==0.5.0 \
+    keras==2.2.4 \
+    --no-cache-dir
+
+USER root
+RUN install2.r reticulate tensorflow keras
+
 COPY . ${HOME}
 RUN chown -R ${NB_USER} ${HOME}
 USER ${NB_USER}
+
 RUN wget https://github.com/wlandau/drake-examples/raw/master/DESCRIPTION && R -e "options(repos = list(CRAN = 'http://mran.revolutionanalytics.com/snapshot/2019-06-21/')); devtools::install_deps()"