public API of tensorflow). We don't expect this to be breaking, unless you
    were importing directly from the implementation.
*   TensorFlow 1.15 is built using devtoolset7 (GCC7) on Ubuntu 16. This may
    lead to ABI incompatibilities with extensions built against earlier versions
    of TensorFlow.
*   Deprecated the use of `constraint=` and `.constraint` with ResourceVariable.

# on why we cannot reference BASE_IMAGE again unless we declare it again.
################################################################################

# Install devtoolset build dependencies
COPY setup.sources.sh /setup.sources.sh
COPY setup.packages.sh /setup.packages.sh
COPY builder.packages.txt /builder.packages.txt

RUN /setup.sources.sh && /setup.packages.sh /builder.packages.txt