如何在核心用户下的CoreOS上安装Python？

Question

按照本指南尝试在CoreOS上安装Python：

https://github.com/judexzhu/Install-Python-on-CoreOs

#!/bin/bash -uxe

VERSION=2.7.13.2715
PACKAGE=ActivePython-${VERSION}-linux-x86_64-glibc-2.12-402695

# make directory
mkdir -p /opt/bin
cd /opt

wget http://downloads.activestate.com/ActivePython/releases/${VERSION}/${PACKAGE}.tar.gz
tar -xzvf ${PACKAGE}.tar.gz

mv ${PACKAGE} apy && cd apy && ./install.sh -I /opt/python/

ln -sf /opt/python/bin/easy_install /opt/bin/easy_install
ln -sf /opt/python/bin/pip /opt/bin/pip
ln -sf /opt/python/bin/python /opt/bin/python
ln -sf /opt/python/bin/python /opt/bin/python2
ln -sf /opt/python/bin/virtualenv /opt/bin/virtualenv

该脚本在CoreOS上的root用户下运行良好。但是在core用户下，它无法正常工作。

如果使用此：

cat > ~/.bashrc << EOF
export PATH=\$PATH:/opt/bin
EOF

显示-bash: /home/core/.bashrc: Read-only file system。

怎么做？