"无法找到jpeg的头文件或库文件"在AlpineLinux上安装Pillow

我正在尝试在基于python:alpine的Docker容器中运行Python的Scrapy .它以前工作过,但现在我想使用Scrapy的Image Pipeline,它需要我安装Pillow.

作为简化示例,我尝试了以下方法Dockerfile:

FROM python:alpine
RUN apk --update add libxml2-dev libxslt-dev libffi-dev gcc musl-dev libgcc openssl-dev curl
RUN apk add libjpeg zlib tiff freetype lcms libwebp tcl openjpeg
RUN pip install Pillow

但是,当我尝试构建它时,我得到一个错误,其中包含以下内容:

Traceback (most recent call last):
  File "/tmp/pip-build-ft5yzzuv/Pillow/setup.py", line 744, in 
    zip_safe=not debug_build(), )
  File "/usr/local/lib/python3.6/distutils/core.py", line 148, in setup
    dist.run_commands()
  File "/usr/local/lib/python3.6/distutils/dist.py", line 955, in run_commands
    self.run_command(cmd)
  File "/usr/local/lib/python3.6/distutils/dist.py", line 974, in run_command
    cmd_obj.run()
  File "/usr/local/lib/python3.6/site-packages/setuptools/command/install.py", line 61, in run
    return orig.install.run(self)
  File "/usr/local/lib/python3.6/distutils/command/install.py", line 545, in run
    self.run_command('build')
  File "/usr/local/lib/python3.6/distutils/cmd.py", line 313, in run_command
    self.distribution.run_command(command)
  File "/usr/local/lib/python3.6/distutils/dist.py", line 974, in run_command
    cmd_obj.run()
  File "/usr/local/lib/python3.6/distutils/command/build.py", line 135, in run
    self.run_command(cmd_name)
  File "/usr/local/lib/python3.6/distutils/cmd.py", line 313, in run_command
    self.distribution.run_command(command)
  File "/usr/local/lib/python3.6/distutils/dist.py", line 974, in run_command
    cmd_obj.run()
  File "/usr/local/lib/python3.6/distutils/command/build_ext.py", line 339, in run
    self.build_extensions()
  File "/tmp/pip-build-ft5yzzuv/Pillow/setup.py", line 545, in build_extensions
    raise RequiredDependencyException(f)
__main__.RequiredDependencyException: jpeg

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "", line 1, in 
  File "/tmp/pip-build-ft5yzzuv/Pillow/setup.py", line 756, in 
    raise RequiredDependencyException(msg)
__main__.RequiredDependencyException:

The headers or library files could not be found for jpeg,
a required dependency when compiling Pillow from source.

Please see the install instructions at:
   https://pillow.readthedocs.io/en/latest/installation.html

我浏览了https://pillow.readthedocs.io/en/latest/installation.html上的要求并尝试找到Alpine的相应软件包,虽然我找不到的是libimagequant,所以这可能是'罪魁祸首".尽管如此,追溯和错误消息似乎在说jpeg缺少了,而我已经安装了openjpeg.

如何修改Dockerfile以便pip install Pillow运行？

1> 小智..：

---

这对我有用

sudo apt-get install libjpeg-dev zlib1g-dev
pip install Pillow

2> Kurt Peek..：

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在以后似乎已被删除的评论中,有人指向我https://github.com/python-pillow/Pillow/blob/c05099f45c0d94a2a98c3609a96bdb6cf7446627/depends/alpine_Dockerfile.根据Dockerfile,我修改了自己的如下:

FROM python:alpine
RUN apk --update add libxml2-dev libxslt-dev libffi-dev gcc musl-dev libgcc openssl-dev curl
RUN apk add jpeg-dev zlib-dev freetype-dev lcms2-dev openjpeg-dev tiff-dev tk-dev tcl-dev
RUN pip install Pillow

现在它成功构建.

---

只需解决“ apk add jpeg-dev”问题，即可解决“找不到jpeg的标头或库文件”的问题

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仔细阅读错误后，我注意到“找不到jpeg的头文件或库文件”部分。这些标头保存在* -dev软件包中。所以我去了https://pkgs.alpinelinux.org/packages?name=libjpeg*&branch=edge，最后“ apk --no-cache --update-cache add libjpeg-turbo-dev zlib-dev”做了诀窍。

---

我用更少的Linux软件包摆脱了困境：```FROM python：3.7-alpine RUN apk --update add gcc libgcc musl-dev jpeg-dev zlib-dev```构建速度更快，并且获取的二进制文件更少。

3> Gabbax0r..：

---

您看过此质量检查了吗？在Linux中安装Pillow（Python模块）期间失败

他们说您必须更新您的pip并安装libjpeg-dev。

4> JohnnyQ..：

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我遇到了docker image这个问题，python:3.6-alpine我通过添加这些软件包解决了它apk add jpeg-dev zlib-dev。