Azure App Service中Python应用因OpenTelemetry SDK权限问题无法启动

我在Azure App Service上部署基于Python的Web应用，应用使用从Azure容器注册表拉取的Docker镜像。问题源于Azure Monitor OpenTelemetry SDK：该SDK会在Linux版Web应用的/var/log/applicationinsights/目录创建诊断日志文件，且此路径为硬编码不可配置，相关核心代码如下：

if not exists(_DIAGNOSTIC_LOG_PATH):
        makedirs(_DIAGNOSTIC_LOG_PATH)
    f_handler = logging.FileHandler(
        join(
            _DIAGNOSTIC_LOG_PATH, _DIAGNOSTIC_LOGGER_FILE_NAME
        )
    )

我使用app_user启动应用，该用户仅能访问容器中应用相关卷，无上述目录的写入权限，导致应用启动失败，抛出如下堆栈信息：

2024-10-25T04:33:34.877284066Z File "/usr/src/app/api/main.py", line 19, in <module> 
2024-10-25T04:33:34.877309466Z configure_azure_telemetry(option="basic") 
2024-10-25T04:33:34.877361967Z File "/usr/src/app/api/dependencies/instrumentation.py", line 11, in configure_azure_telemetry 
2024-10-25T04:33:34.877378367Z configure_basic_azure_monitor() 
2024-10-25T04:33:34.877383767Z File "/usr/src/app/doc_generator_api/dependencies/instrumentation.py", line 25, in configure_basic_azure_monitor 
2024-10-25T04:33:34.878324584Z configure_azure_monitor( 
2024-10-25T04:33:34.879013896Z File "/agents/python/azure/monitor/opentelemetry/_configure.py", line 98, in configure_azure_monitor 
2024-10-25T04:33:34.879018996Z _send_attach_warning() 
2024-10-25T04:33:34.879022896Z File "/agents/python/azure/monitor/opentelemetry/_configure.py", line 222, in _send_attach_warning 
2024-10-25T04:33:34.879026897Z AzureDiagnosticLogging.warning( 
2024-10-25T04:33:34.879030297Z File "/agents/python/azure/monitor/opentelemetry/_diagnostics/diagnostic_logging.py", line 87, in warning 
2024-10-25T04:33:34.879034197Z AzureDiagnosticLogging._initialize() 
2024-10-25T04:33:34.879037997Z File "/agents/python/azure/monitor/opentelemetry/_diagnostics/diagnostic_logging.py", line 68, in _initialize 
2024-10-25T04:33:34.879041897Z f_handler = logging.FileHandler( 
2024-10-25T04:33:34.879883312Z ^^^^^^^^^^^^^^^^^^^^ 
2024-10-25T04:33:34.879896112Z File "/opt/conda/lib/python3.11/logging/__init__.py", line 1181, in __init__ 
2024-10-25T04:33:34.879905312Z StreamHandler.__init__(self, self._open()) 
2024-10-25T04:33:34.879910112Z ^^^^^^^^^^^^ 
2024-10-25T04:33:34.879914512Z File "/opt/conda/lib/python3.11/logging/__init__.py", line 1213, in _open 
2024-10-25T04:33:34.879919112Z return open_func(self.baseFilename, self.mode, 
2024-10-25T04:33:34.879923612Z ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
2024-10-25T04:33:34.879928513Z PermissionError: [Errno 13] Permission denied: '/var/log/applicationinsights/applicationinsights-extension.log'

我已尝试在Dockerfile中修改该目录权限：

RUN mkdir -p /var/log/applicationinsights

# Set the permissions to allow writing
RUN chown -R ${APP_UID}:${APP_GID} /var/log/applicationinsights
RUN chmod -R 755 /var/log/applicationinsights

但部署至Azure App Service后，/var/log/applicationinsights/目录仍归root所有，问题未解决。

内容的提问来源于stack exchange，提问作者Sumit Kumar Mahto