message: modify build.Dockerfile to upate tensorflow
diff: @@ -35,7 +35,8 @@ RUN apt-get update -y && \
  python3-setuptools \
  python3-wheel && \
  rm -rf /var/lib/apt/lists/*
  -RUN pip3 install numpy pandas sklearn ortools tensorflow
  +RUN pip3 install --upgrade pip && \
  + pip3 install numpy pandas sklearn ortools tensorflow
  RUN mkdir -p /opt/conda
  ENV CONDA_PREFIX=/opt/conda
  