在Jenkins Docker中升级Python

我现在有一个关于Jenkins和Python的docker图像

我做了一些类似的事情

FROM jenkins/jenkins:lts
USER root
RUN apt-get update && \
    apt-get install -y python python-pip python3-pip && \
    ... (and more stuff)
... (I also install gcloud sdk)
WORKDIR /opt/app
RUN /usr/bin/env python3 -m pip install --upgrade pip \
    && /usr/bin/env python3 -m pip install pipenv==2018.10.13
RUN /usr/bin/env python -m pip install --upgrade pip \
    && /usr/bin/env python -m pip install pipenv==2018.10.13
RUN chown jenkins /opt/app -R
USER jenkins

但这将安装python 3.5.3（）

我需要Python3.7（以及Python2.7.15）

因此，我正在尝试使用多个

FROM

的方法，如前所述。但是没有用

FROM python:2.7.15-stretch as py2
FROM python:3.7.2-stretch as py3
FROM jenkins/jenkins:lts as jenkins

我很确定这不太复杂。。。一旦你玩过它一次

---

因此，欢迎任何帮助。

它很有效！我喜欢这样：

FROM python:3.7.2-stretch as py3

FROM python:2.7.15-stretch as py2

FROM jenkins/jenkins:lts

USER root
COPY --from=py2 /usr/local/lib /usr/local/lib
COPY --from=py2 /usr/local/bin /usr/local/bin
COPY --from=py2 /usr/local/include /usr/local/include
COPY --from=py2 /usr/local/man /usr/local/man
COPY --from=py2 /usr/local/share /usr/local/share

COPY --from=py3 /usr/local/lib /usr/local/lib
COPY --from=py3 /usr/local/bin /usr/local/bin
COPY --from=py3 /usr/local/include /usr/local/include
COPY --from=py3 /usr/local/man /usr/local/man
COPY --from=py3 /usr/local/share /usr/local/share

RUN apt-get update && \
    ...

---

TL&DR:这是在Jenkins提供的docker映像上获取最新python的最佳方法

说明

创建包含以下内容的DockerFile：

FROM jenkins/jenkins:lts-alpine
USER root
RUN apk add python3 && \
     python3 -m ensurepip && \
     pip3 install --upgrade pip setuptools && \
     if [ ! -e /usr/bin/pip ]; then ln -s pip3 /usr/bin/pip ; fi && \
     if [[ ! -e /usr/bin/python ]]; then ln -sf /usr/bin/python3 /usr/bin/python; fi && \
     rm -r /root/.cache
RUN apk add pkgconf
RUN apk add build-base
RUN apk add python3-dev
RUN apk add postgresql-dev
RUN apk add postgresql-client

---

我不确定这里正在做什么。Python3.7真的安装了吗？这不起作用：python:加载共享库时出错：libpython3.7m.so.1.0:无法打开共享对象文件：没有这样的文件或目录