centos7安装python3.8

FROM centos:7

RUN yum install -y centos-release-scl
RUN yum install -y rh-python38

# 将python3.8设置为默认python版本
RUN alternatives --set python3 /opt/rh/rh-python38/root/usr/bin/python3

# 如果没生效,需要自己软连接
# ln -s /opt/rh/rh-python38/root/usr/bin/python3 /usr/bin/python3


# 验证Python安装
RUN python --version

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