如何在 Dockerfile 中本地安装 pip 包？

Question

我正在尝试从 github 克隆一个 python 包，然后将其安装在本地，pip -e如下所示：

RUN git clone https://github.com/st4lk/django-rest-social-auth.git
RUN pip install -e django-rest-social-auth

但我收到错误消息：

Step 6 : RUN pip install -e django-rest-social-auth
 ---> Running in 8943e688573f
Traceback (most recent call last):
  File "/usr/bin/pip", line 9, in <module>
    load_entry_point('pip==1.5.6', 'console_scripts', 'pip')()
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 356, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2476, in load_entry_point
    return ep.load()
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2190, in load
    ['__name__'])
  File "/usr/lib/python2.7/dist-packages/pip/__init__.py", line 74, in <module>
    from pip.vcs import git, mercurial, subversion, bazaar  # noqa
  File "/usr/lib/python2.7/dist-packages/pip/vcs/mercurial.py", line 9, in <module>
    from pip.download import path_to_url
  File "/usr/lib/python2.7/dist-packages/pip/download.py", line 25, in <module>
    from requests.compat import IncompleteRead
ImportError: cannot import name IncompleteRead

怎么了？

---

完整Dockerfile供参考：

FROM debian:jessie

ADD . /workflows

# Install dependencies

RUN apt-get update && apt-get install -y \
    git \
    python-django \
    python-psycopg2 \
    python-django-celery \
    rabbitmq-server \
    python-django-jsonfield \
    python-pip

RUN pip install djangorestframework \
    python-social-auth

RUN git clone https://github.com/st4lk/django-rest-social-auth.git

RUN pip install -e django-rest-social-auth

# Get everything ready and run

RUN python /workflows/manage.py validate
RUN python /workflows/manage.py collectstatic --noinput

CMD python /workflows/manage.py runserver 0.0.0.0:8000

Answer 1

该IncompleteRead名称已从https://github.com/kennethreitz/requests/commit/47d0517d66e8cf5832768262221f0357ae134ad1requests.compat中删除。

完成 Dockerfile 的这一部分后...

RUN apt-get update && apt-get install -y \
    git \
    python-django \
    python-psycopg2 \
    python-django-celery \
    rabbitmq-server \
    python-django-jsonfield \
    python-pip

您拥有 Requests 版本 2.4.3 和 pip 1.5.6。这两个都相当老了。当你下次跑步时pip install...

RUN pip install djangorestframework \
    python-social-auth

...这会将您的 Requests 包升级到 2.9.1，它不再与pip映像中安装的旧版本兼容。

您可以通过安装较新版本的 来避免此问题pip。无需安装python-pip包，只需使用 easy_install获取pip：

RUN apt-get update && apt-get install -y \
    git \
    python-django \
    python-psycopg2 \
    python-django-celery \
    rabbitmq-server \
    python-django-jsonfield

RUN easy_install pip

这将安装最新版本的pip，它将与后续 Python 模块安装所需的 Requests 版本一起成功运行。