[WARNING]: Empty continuation lines will become errors in a future release.

[Ryan Avery]

I'm building an edited version of the tensorflow-py36-cuda90 dockerfile where I pip install some more packages

# ==================================================================
# module list
# ------------------------------------------------------------------
# python        3.6    (apt)
# tensorflow    latest (pip)
# ==================================================================

FROM nvidia/cuda:10.0-cudnn7-devel-ubuntu18.04
ENV LANG C.UTF-8
RUN APT_INSTALL="apt-get install -y --no-install-recommends" && \
    PIP_INSTALL="python -m pip --no-cache-dir install --upgrade" && \
    GIT_CLONE="git clone --depth 10" && \

    rm -rf /var/lib/apt/lists/* \
           /etc/apt/sources.list.d/cuda.list \
           /etc/apt/sources.list.d/nvidia-ml.list && \

    apt-get update && \

# ==================================================================
# tools
# ------------------------------------------------------------------

    DEBIAN_FRONTEND=noninteractive $APT_INSTALL \
        build-essential \
        apt-utils \
        ca-certificates \
        wget \
        git \
        vim \
        libssl-dev \
        curl \
        unzip \
        unrar \
        && \

    $GIT_CLONE https://github.com/Kitware/CMake ~/cmake && \
    cd ~/cmake && \
    ./bootstrap && \
    make -j"$(nproc)" install && \

# ==================================================================
# python
# ------------------------------------------------------------------

    DEBIAN_FRONTEND=noninteractive $APT_INSTALL \
        software-properties-common \
        && \
    add-apt-repository ppa:deadsnakes/ppa && \
    apt-get update && \
    DEBIAN_FRONTEND=noninteractive $APT_INSTALL \
        python3.6 \
        python3.6-dev \
        python3-distutils-extra \
        && \
    wget -O ~/get-pip.py \
        https://bootstrap.pypa.io/get-pip.py && \
    python3.6 ~/get-pip.py && \
    ln -s /usr/bin/python3.6 /usr/local/bin/python3 && \
    ln -s /usr/bin/python3.6 /usr/local/bin/python && \
    $PIP_INSTALL \
        setuptools \
        && \
    $PIP_INSTALL \
        numpy \
        matplotlib \
        pyqt \
        seaborn \
        xlrd \
        scipy \
        scikit-learn \
        scikit-image \
        xarray \
        dask \
        pandas \
        cloudpickle \
        Cython \
        Pillow \
        opencv \
        IPython[all] \
        rasterstats \
        geopy \
        cartopy \
        geopandas \
        rasterio \
        contextily \
        pysal \
        pyproj \
        folium \
        gdal \
        libgdal \
        kealib \
        geojson \
        yaml \
        "git+https://github.com/ecohydro/lsru@master#egg=lsru" \
        imgaug \
        rioxarray \
        && \

# ==================================================================
# tensorflow
# ------------------------------------------------------------------

    $PIP_INSTALL \
        tf-nightly-gpu-2.0-preview \
        && \

# ==================================================================
# config & cleanup
# ------------------------------------------------------------------

    ldconfig && \
    apt-get clean && \
    apt-get autoremove && \
    rm -rf /var/lib/apt/lists/* /tmp/* ~/*

EXPOSE 6006

I get the following with both my modified dockerfile and the original docker file. Doesn't seem to affect the build but looks like it will in the future.

# rave at rave-thinkpad in ~/CropMask_RCNN on git:azureml-refactor ✖︎ [17:05:27]
→ docker build . -t tensorflow-py36-cu90:2
Sending build context to Docker daemon  219.8MB
[WARNING]: Empty continuation line found in:
    RUN APT_INSTALL="apt-get install -y --no-install-recommends" &&     PIP_INSTALL="python -m pip --no-cache-dir install --upgrade" &&     GIT_CLONE="git clone --depth 10" &&     rm -rf /var/lib/apt/lists/*            /etc/apt/sources.list.d/cuda.list            /etc/apt/sources.list.d/nvidia-ml.list &&     apt-get update &&     DEBIAN_FRONTEND=noninteractive $APT_INSTALL         build-essential         apt-utils         ca-certificates         wget         git         vim         libssl-dev         curl         unzip         unrar         &&     $GIT_CLONE https://github.com/Kitware/CMake ~/cmake &&     cd ~/cmake &&     ./bootstrap &&     make -j"$(nproc)" install &&     DEBIAN_FRONTEND=noninteractive $APT_INSTALL         software-properties-common         &&     add-apt-repository ppa:deadsnakes/ppa &&     apt-get update &&     DEBIAN_FRONTEND=noninteractive $APT_INSTALL         python3.6         python3.6-dev         python3-distutils-extra         &&     wget -O ~/get-pip.py         https://bootstrap.pypa.io/get-pip.py &&     python3.6 ~/get-pip.py &&     ln -s /usr/bin/python3.6 /usr/local/bin/python3 &&     ln -s /usr/bin/python3.6 /usr/local/bin/python &&     $PIP_INSTALL         setuptools         &&     $PIP_INSTALL         numpy         matplotlib         pyqt         seaborn         xlrd         scipy         scikit-learn         scikit-image         xarray         dask         pandas         cloudpickle         Cython         Pillow         opencv         IPython[all]         rasterstats         geopy         cartopy         geopandas         rasterio         contextily         pysal         pyproj         folium         gdal         libgdal         kealib         geojson         yaml         "git+https://github.com/ecohydro/lsru@master#egg=lsru"         imgaug         rioxarray         &&     $PIP_INSTALL         tf-nightly-gpu-2.0-preview         &&     ldconfig &&     apt-get clean &&     apt-get autoremove &&     rm -rf /var/lib/apt/lists/* /tmp/* ~/*
[WARNING]: Empty continuation lines will become errors in a future release.