[jupyterhub] install tensorflow via pypi (using our own pypi server)

jupyterhub/Dockerfile

@@ -18,8 +18,6 @@ RUN curl -sL https://deb.nodesource.com/setup_10.x | bash - && \
         openjdk-11-jre-headless && \
     apt-get clean
 
-COPY --from=git.imp.fu-berlin.de:5000/bioroboticslab/robofish/docker/tensorflow:1.15.3 /opt/tensorflow/build/tensorflow-1.15.3-cp37-cp37m-linux_x86_64.whl /opt/tensorflow/tensorflow-1.15.3-cp37-cp37m-linux_x86_64.whl
-
 RUN python3.7 -m pip --no-cache-dir install \
         jupyterlab \
 	jupyterhub \
@@ -38,7 +36,7 @@ RUN mkdir -p ~/.venv && \
     . ~/.venv/robofish/bin/activate && \
     pip --no-cache-dir install --upgrade pip==20.1.1 && \
     pip --no-cache-dir install --upgrade setuptools==49.1.0 && \
-    pip install /opt/tensorflow/tensorflow-1.15.3-cp37-cp37m-linux_x86_64.whl && \
+    pip install tensorflow==1.15.3 && \
     pip --no-cache-dir install \
         wheel \
         scipy \