python - 在 Docker 容器中安装 OpenCV

Question

我正在尝试 Dockerise 一个依赖于 OpenCV 的 Python 应用程序。我尝试了几种不同的方法，但是当我尝试运行应用程序时，我不断收到... ImportError: No module named cv2。

这是我当前的 Dockerfile。

FROM python:2.7

MAINTAINER Ewan Valentine <ewan@theladbible.com>

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 

还有我的 requirements.txt 文件

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

使用稍微不同的设置进行了修复

FROM python:2.7

MAINTAINER Ewan Valentine <ewan@theladbible.com>

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