带有基于构建python的docker的Locale.Error

Question

我是新的docker，如果有人能帮助我摆脱这个错误，同时建立docker映像，我将不胜感激。它给出了某种区域设置错误。我怎样才能摆脱这个错误？

Collecting pip
Downloading pip-8.1.1-py2.py3-none-any.whl (1.2MB)
Collecting setuptools
Downloading setuptools-20.3.1-py2.py3-none-any.whl (508kB)
Collecting wheel
Downloading wheel-0.29.0-py2.py3-none-any.whl (66kB)
Installing collected packages: pip, setuptools, wheel
Successfully installed pip-8.1.1 setuptools-20.3.1 wheel-0.29.0
+ pip install --no-cache-dir --upgrade pip==8.0.2
Traceback (most recent call last):
File "/usr/bin/pip", line 11, in 
sys.exit(main())
File "/usr/lib/python2.7/site-packages/pip/__init__.py", line 215, in main
locale.setlocale(locale.LC_ALL, '')
File "/usr/lib64/python2.7/locale.py", line 547, in setlocale
return _setlocale(category, locale)
locale.Error: unsupported locale setting
The command '/bin/sh -c set -ex && gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$GPG_KEY" && curl -fSL 'https://bootstrap.pypa.io/get-pip.py' | python2 && pip install --no-cache-dir --upgrade pip==$PYTHON_PIP_VERSION' returned a non-zero code: 1

这是我的Dockerfile：

FROM mybase:1.0.7

RUN set -x \
&& yum install -y python-devel libffi-devel python-cffi \
&& yum clean all

ENV LANG C.UTF-8

ENV GPG_KEY C01E1CAD5EA2C4F0B8E3571504C367C218ADD4FF

ENV PYTHON_VERSION 2.7.11

ENV PYTHON_PIP_VERSION 8.0.2

RUN set -ex \
&& gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$GPG_KEY" \
&& curl -fSL 'https://bootstrap.pypa.io/get-pip.py' | python2 \
&& pip install --no-cache-dir --upgrade pip==$PYTHON_PIP_VERSION

RUN pip install --no-cache-dir virtualenv

CMD ["python2"]

Answer 1

locale.setlocale文档说locale应该是有效的。如果传递的是空字符串，则使用LANG变量来设置区域设置。导致此错误的原因可能是您的LANG不是受支持的区域设置

在docker脚本中，将LANG设置为C.UTF-8。在glibc中，C.UTF-8看起来不是一个受支持的语言环境，我猜这就是为什么在Python语言中(请参阅this和this)。

您可以将LANG设置为支持的类型，如en_US.UTF-8 (我的电脑上的默认类型)。

在Python-2.6上，我得到了以下结果

Python 2.6.6 (r266:84292, Jan 22 2014, 09:42:36) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import locale
>>> locale.setlocale(locale.LC_ALL, "")
'en_US.utf8'
>>> locale.setlocale(locale.LC_ALL, "C.UTF-8")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib64/python2.6/locale.py", line 513, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting
>>> locale.setlocale(locale.LC_ALL, "en_US.UTF-8")
'en_US.UTF-8'
>>> locale.setlocale(locale.LC_ALL, "de_DE.UTF-8")
'de_DE.UTF-8'

通过运行以下命令，可以查看计算机上可用的区域设置

$ locale -a