Docker + Python 3 + OpenCV 3.2

Dockerfile

FROM python:3.6.1

ENV DEBIAN_FRONTEND=noninteractive
WORKDIR /

# Install some essential build tools
RUN apt-get update \
    && apt-get -y install wget unzip \
        build-essential cmake git 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 \
    && rm -rf /var/lib/apt/lists/*

RUN wget https://bootstrap.pypa.io/get-pip.py && python get-pip.py
RUN pip3 install numpy

# Install OpenCV 3.2.0
RUN wget https://github.com/Itseez/opencv/archive/3.2.0.zip \
    && unzip 3.2.0.zip \
    && mv opencv-3.2.0 /opencv \
    && mkdir /opencv/release \
    && cd /opencv/release \
    && cmake -DBUILD_TIFF=ON \
		-DBUILD_opencv_java=OFF \
		-DWITH_CUDA=OFF \
		-DENABLE_AVX=ON \
		-DWITH_OPENGL=ON \
		-DWITH_OPENCL=ON \
		-DWITH_IPP=OFF \
		-DWITH_TBB=ON \
		-DWITH_EIGEN=ON \
		-DWITH_V4L=ON \
		-DWITH_VTK=OFF \
		-DBUILD_TESTS=OFF \
		-DBUILD_PERF_TESTS=OFF \
		-DCMAKE_BUILD_TYPE=RELEASE \
		-DBUILD_opencv_python2=OFF \
		-DCMAKE_INSTALL_PREFIX=$(python3.6 -c "import sys; print(sys.prefix)") \
		-DPYTHON3_EXECUTABLE=$(which python3.6) \
		-DPYTHON3_INCLUDE_DIR=$(python3.6 -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())") \
		-DPYTHON3_PACKAGES_PATH=$(python3.6 -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())") .. \
        && make -j4 \
        && make install \
        && rm /3.2.0.zip \
        && ldconfig

CMD ["bash"]