基于 python 的 Dockerfile 抛出 locale.Error : unsupported locale setting

Question

我在将主机的 (Centos7) 语言环境传递给 python3 docker 镜像时遇到问题。尽管我使用了以下链接中描述的建议，但只有以下语言环境最终出现在图像中:

C
C.UTF-8
POSIX

Why does locale.getpreferredencoding() return 'ANSI_X3.4-1968' instead of 'UTF-8'?

我的 Dockerfile 有:

FROM python:3.7.5
ENV LC_ALL C.UTF-8
WORKDIR /data
ADD ./requirements.txt /data/requirements.txt
RUN pip install -r requirements.txt
COPY . /data
CMD [ "python3", "./test.py" ]

当我运行此命令时:

locale.setlocale(locale.LC_ALL,'ru_RU')

它抛出这个错误:

Traceback (most recent call last):
      File "./test.py", line 10, in <module>
        locale.setlocale(locale.LC_ALL,'ru_RU')
      File "/usr/local/lib/python3.7/locale.py", line 608, in setlocale
        return _setlocale(category, locale)
    locale.Error: unsupported locale setting

如果我设置

ENV LANG ru_RU.UTF-8
ENV LC_ALL ru_RU.UTF-8

然后我得到:

locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_COLLATE to default locale: No such file or directory
locale.getdefaultlocale ('ru_RU', 'UTF-8')
locale.getpreferredencoding UTF-8
Exception: unsupported locale setting

请解释如何将 ru_RU 语言环境添加到 python 图像中？

Answer 1

我会为基于 Debian 的 docker 镜像做什么:

FROM python:3.7.5

RUN apt-get update && \
    apt-get install -y locales && \
    sed -i -e 's/# ru_RU.UTF-8 UTF-8/ru_RU.UTF-8 UTF-8/' /etc/locale.gen && \
    dpkg-reconfigure --frontend=noninteractive locales

ENV LANG ru_RU.UTF-8
ENV LC_ALL ru_RU.UTF-8

然后在python中:

import locale

locale.setlocale(locale.LC_ALL,'ru_RU.UTF-8')