如何在Dockerfile中本地安装pip包？

Question

我正在尝试从github克隆一个python软件包，然后使用pip -e在本地安装它，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？

---

完整的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名字从取出requests.compat在https://github.com/kennethreitz/requests/commit/47d0517d66e8cf5832768262221f0357ae134ad1 。

在完成Dockerfile的这一部分之后...

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

您有请求版本2.4.3和点1.5.6。 这两个都是很老的。 下次运行pip install ...

RUN pip install djangorestframework \
    python-social-auth

...这会将您的请求包升级到2.9.1，该包不再与映像中安装的旧版pip兼容。

您可以通过安装较新版本的pip来避免此问题。 无需安装python-pip软件包，只需使用easy_install来获取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模块安装所需的请求版本一起成功运行。