为什么dockered centos无法识别点子? [英] Why dockered centos doesn't recognize pip?

问题描述

我想用centos创建一个带有python和几个软件包的容器.我试图在原始centos容器中运行几个命令.一切正常，我已经安装了所有想要的东西.然后，我用通过RUN执行的相同命令创建了Dockerfile，我得到了/bin/sh: pip: command not found可能是什么问题?我的意思是说情况.为什么所有内容都可以在命令行中执行但不能用RUN执行?我已经尝试了两种变体:

I want to create a container with python and few packages over centos. I've tried to run several commands inside raw centos container. Everything worked fine I've installed everything I want. Then I created Dockerfile with the same commands executed via RUN and I'm getting /bin/sh: pip: command not found What could be wrong? I mean the situation at all. Why everything could be executed in the command line but not be executed with RUN? I've tried both variants:

RUN command
RUN command
RUN pip install ...

和

RUN command\
    && command\
    && pip install ...

我执行的命令

from centos

run yum install -y centos-release-scl\
    && yum install -y rh-python36\
    && scl enable rh-python36 bash\
    && pip install django

UPD :帮助您找到完整的点.怎么了?

UPD: Full path to the pip helped. What's wrong?

推荐答案

您需要先使用

yum install python-pip

或者如果您需要python3(来自epel)

or if you need python3 (from epel)

yum install python36-pip

如果不确定，请询问yum:

yum whatprovides /usr/bin/pip

python2-pip-18.1-1.fc29.noarch : A tool for installing and managing Python 2 packages
Repo        : @System
Matched from:
Filename    : /usr/bin/pip

python2-pip-18.1-1.fc29.noarch : A tool for installing and managing Python 2 packages
Repo        : updates
Matched from:
Filename    : /usr/bin/pip

python2-pip-18.0-4.fc29.noarch : A tool for installing and managing Python 2 packages
Repo        : fedora
Matched from:
Filename    : /usr/bin/pip

此输出来自Fedora29，但您应该在Centos/RHEL中得到类似的结果

更新

来自评论

但是当我从docker run -ti centos执行相同的命令时，一切 很好有什么问题吗?

But when I execute same commands from docker run -ti centos everything is fine. What's the problem?

也许您的PATH坏了吗?你可以尝试完整的点子路径吗?

Maybe your PATH is broken somehow? Can you try full path to pip?

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