我正在尝试将使用一些自定义模块的Django应用程序码头化，为了导入它们，我需要将其路径添加到PYTHONPATH 问题是当我尝试执行此操作时，我覆盖了PYTHONPATH，因此它不再检测到Django。
我尝试的命令：
ENV PYTHONPATH "${PYTONPATH}:/mypath"
ENV PYTHONPATH "$PYTONPATH:/mypath"
RUN export PYTHONPATH="$PYTHONPATH:/mypath"
我还尝试创建一个.bash_profile文件，将文件添加到该路径并运行源.bash_profile，但未成功：
CMD echo "export PYTHONPATH='/mypath'" > ./.bash_profile
CMD source ./.bash_profile
错误消息：
Couldn't import Django. Are you sure it's installed and "
ImportError: Couldn't import Django. Are you sure it's installed and available on your PYTHONPATH environment variable? Did you forget to activate a virtual environment?```