PyCharm远程调试容器内Django应用遇“地址已占用”问题求助

• 无法使用PyCharm 2025.1及更早版本调试容器中运行的Django应用
• 应用运行在容器内，已暴露5678端口用于调试，Visual Studio Code可正常调试，但PyCharm配置远程调试会话时持续报错“Address already in use”
• 希望复用已存在的端口而非启动新服务器；咨询Jetbrains的Jenie服务未解决问题，对方建议开启CLIENT_MODE，但该选项无UI入口，手动配置后也无效

PyCharm远程调试配置 #

<component name="ProjectRunConfigurationManager">
<configuration default="false" name="myapp Remote Debug Client" type="PyRemoteDebugConfigurationType"
               factoryName="Python Remote Debug">
    <module name="myapp-saas"/>
    <option name="PORT" value="5678"/>
    <option name="HOST" value="localhost"/>
    <PathMappingSettings>
        <option name="pathMappings">
            <list>
                <mapping local-root="$PROJECT_DIR$" remote-root="/app"/>
            </list>
        </option>
    </PathMappingSettings>
    <option name="REDIRECT_OUTPUT" value="true"/>
    <option name="SUSPEND_AFTER_CONNECT" value="false"/>
    <option name="CLIENT_MODE" value="true"/>
    <method v="2"/>
</configuration>
</component>

Dockerfile配置 #

CMD ["sh", "-c", "python3 -m debugpy --listen 0.0.0.0:5678 manage.py runserver 0.0.0.0:8080"]

内容的提问来源于stack exchange，提问作者Luis C.