Dockerfile.android

# From https://hub.docker.com/r/valian/docker-python-opencv-ffmpeg
# with the version changed to 3.4.5 (rather than 3.4.2)
# 
# https://www.learnopencv.com/install-opencv3-on-ubuntu/

FROM ubuntu:16.04
LABEL maintainer "clark.dorman@nextcentury.com"
ENV OPENCV_VERSION 3.4.5

# Necessary for tzdata, which wants to know the timezone
ENV DEBIAN_FRONTEND noninteractive

# Install all dependencies for OpenCV
RUN apt-get -y update && \
    apt-get -y install --no-install-recommends \
        python3 \
        python3-dev \
        git \
        wget \
        unzip \
        cmake \
        build-essential \
        pkg-config \
        libatlas-base-dev \
        gfortran \
        libjasper-dev \
        libgtk2.0-dev \
        libavcodec-dev \
        libavformat-dev \
        libswscale-dev \
        libjpeg-dev \
        libpng-dev \
        libtiff-dev \
        libjasper-dev \
        libv4l-dev \
        openjdk-8-jdk \
        expect \
        tzdata \
        ninja-build \
        ant \
    && \
# install python dependencies
    wget https://bootstrap.pypa.io/get-pip.py && \
    python3 get-pip.py && \
    rm get-pip.py && \
    pip3 install numpy \
    && \
# Install OpenCV
    wget https://github.com/opencv/opencv/archive/$OPENCV_VERSION.zip -O opencv3.zip && \
    unzip -q opencv3.zip && \
    mv /opencv-$OPENCV_VERSION /opencv && \
    rm opencv3.zip && \
    wget https://github.com/opencv/opencv_contrib/archive/$OPENCV_VERSION.zip -O opencv_contrib3.zip && \
    unzip -q opencv_contrib3.zip && \
    mv /opencv_contrib-$OPENCV_VERSION /opencv_contrib && \
    rm opencv_contrib3.zip &&\
# clean as much as possible
    apt-get autoremove -y && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/*

# Prepare opencv build
RUN    mkdir /opencv/build && cd /opencv/build && \
    cmake -D CMAKE_BUILD_TYPE=RELEASE \
      -D BUILD_PYTHON_SUPPORT=ON \
      -D CMAKE_INSTALL_PREFIX=/usr/local \
      -D OPENCV_EXTRA_MODULES_PATH=/opencv_contrib/modules \
      -D BUILD_EXAMPLES=OFF \
      -D PYTHON_DEFAULT_EXECUTABLE=/usr/bin/python3 \
      -D BUILD_opencv_python3=ON \
      -D BUILD_opencv_python2=OFF \
      -D WITH_IPP=OFF \
      -D WITH_FFMPEG=ON \
      -D WITH_V4L=ON ..

# make and Install opencv
RUN    cd /opencv/build && \
    make -j$(nproc) && \
    make install && \
    ldconfig && \
    rm -rf /opencv/build

# Set correct gcc version
RUN  apt-get -y update && \
     apt-get install --no-install-recommends -y software-properties-common && \
     add-apt-repository ppa:ubuntu-toolchain-r/test && \
     apt-get -y update && \
     apt-get install -y gcc-7 g++-7 && \
     rm /usr/bin/gcc /usr/bin/g++ && \
     ln -s /usr/bin/gcc-7 /usr/bin/gcc && \
     ln -s /usr/bin/g++-7 /usr/bin/g++ && \
     apt-get autoremove -y && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/* && \ 
    \    
# Get the tools that will get the Android SDK
    mkdir /android_sdk && \
    cd /android_sdk && \
    wget https://dl.google.com/android/repository/tools_r25.2.5-linux.zip && \
    unzip tools_r25.2.5-linux.zip && \
    rm -rf tools_r25.2.5-linux.zip && \
    \
# Get the actual sdk and build tools of the appropriate version 
    sh -c "/bin/echo -e 'y' | /android_sdk/tools/bin/sdkmanager --verbose 'build-tools;27.0.3'" && \ 
    sh -c "/bin/echo -e 'y' | /android_sdk/tools/bin/sdkmanager --verbose 'platforms;android-26'" && \ 
    sh -c "/bin/echo -e 'y' | /android_sdk/tools/bin/sdkmanager --verbose 'platform-tools'" && \ 
    \ 
# Get the native development kit
    mkdir /android_ndk && \
    cd /android_ndk && \
    wget https://dl.google.com/android/repository/android-ndk-r14b-linux-x86_64.zip &&\
    unzip android-ndk-r14b-linux-x86_64.zip && \
    rm -rf android-ndk-r14b-linux-x86_64.zip && \
    \
# Build the OpenCV Android SDK
    mkdir /OpenCV-android-sdk && \
    cd /OpenCV-android-sdk && \
    python /opencv/platforms/android/build_sdk.py --ndk_path=/android_ndk/android-ndk-r14b --sdk_path=/android_sdk --no_ccache --extra_modules_path=/opencv_contrib/modules/ --config=/opencv/platforms/android/ndk-16.config.py --force_copy --force_opencv_toolchain && \
 # Clean Opencv Android SDK Build
    cd /OpenCV-android-sdk && \
    mv OpenCV-android-sdk ~/ && \
    rm -rf /OpenCV-android-sdk && \ 
    \
# Clean as much as possible 
    apt-get -y remove \
    python3-dev \
    libatlas-base-dev \
    gfortran \
    libjasper-dev \
    libgtk2.0-dev \
    libavcodec-dev \
    libavformat-dev \
    libswscale-dev \
    libjpeg-dev \
    libpng-dev \
    libtiff-dev \
    libjasper-dev \
    libv4l-dev \
    ninja-build \
    ant \
    && \
    apt-get clean && \
    rm -rf /opencv /opencv_contrib /var/lib/apt/lists/*

# Define default command.
CMD ["python3 --version"]