Install OpenCV in a Docker container

Question

I'm attempting to Dockerise a Python application, which depends on OpenCV. I've tried several different ways, but I keep getting... ImportError: No module named cv2 when I attempt to run the application.

Here's my current Dockerfile.

FROM python:2.7  MAINTAINER Ewan Valentine <[email protected]>  RUN mkdir -p /usr/src/app  WORKDIR /usr/src/app   # Various Python and C/build deps RUN apt-get update && apt-get install -y \      wget \     build-essential \      cmake \      git \     pkg-config \     python-dev \      python-opencv \      libopencv-dev \      libav-tools  \      libjpeg-dev \      libpng-dev \      libtiff-dev \      libjasper-dev \      libgtk2.0-dev \      python-numpy \      python-pycurl \      libatlas-base-dev \     gfortran \     webp \      python-opencv   # Install Open CV - Warning, this takes absolutely forever RUN cd ~ && git clone https://github.com/Itseez/opencv.git && \      cd opencv && \     git checkout 3.0.0 && \     cd ~ && git clone https://github.com/Itseez/opencv_contrib.git && \     cd opencv_contrib && \     git checkout 3.0.0 && \     cd ~/opencv && mkdir -p build && cd build && \     cmake -D CMAKE_BUILD_TYPE=RELEASE \     -D CMAKE_INSTALL_PREFIX=/usr/local \      -D INSTALL_C_EXAMPLES=ON \      -D INSTALL_PYTHON_EXAMPLES=ON \      -D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib/modules \      -D BUILD_EXAMPLES=OFF .. && \     make -j4 && \     make install && \      ldconfig  COPY requirements.txt /usr/src/app/ RUN pip install --no-cache-dir -r requirements.txt  COPY . /usr/src/app  

And my requirements.txt file

Flask==0.8 gunicorn==0.14.2 requests==0.11.1 bs4==0.0.1 nltk==3.2.1 pymysql==0.7.2 xlsxwriter==0.8.5 numpy==1.11 Pillow==3.2.0 cv2==1.0 pytesseract==0.1 

Answer 1

Fixed with a slightly different set-up

FROM python:2.7  MAINTAINER Ewan Valentine <[email protected]>  RUN mkdir -p /usr/src/app  WORKDIR /usr/src/app   # Various Python and C/build deps RUN apt-get update && apt-get install -y \      wget \     build-essential \      cmake \      git \     unzip \      pkg-config \     python-dev \      python-opencv \      libopencv-dev \      libav-tools  \      libjpeg-dev \      libpng-dev \      libtiff-dev \      libjasper-dev \      libgtk2.0-dev \      python-numpy \      python-pycurl \      libatlas-base-dev \     gfortran \     webp \      python-opencv \      qt5-default \     libvtk6-dev \      zlib1g-dev   # Install Open CV - Warning, this takes absolutely forever RUN mkdir -p ~/opencv cd ~/opencv && \     wget https://github.com/opencv/opencv/archive/3.0.0.zip && \     unzip 3.0.0.zip && \     rm 3.0.0.zip && \     mv opencv-3.0.0 OpenCV && \     cd OpenCV && \     mkdir build && \      cd build && \     cmake \     -DWITH_QT=ON \      -DWITH_OPENGL=ON \      -DFORCE_VTK=ON \     -DWITH_TBB=ON \     -DWITH_GDAL=ON \     -DWITH_XINE=ON \     -DBUILD_EXAMPLES=ON .. && \     make -j4 && \     make install && \      ldconfig  COPY requirements.txt /usr/src/app/ RUN pip install --no-cache-dir -r requirements.txt  COPY . /usr/src/app