Azure App Service中启动Python Gradio应用失败求助

已成功部署Azure App Service，但无法启动简单的Gradio应用。微软文档提到，未基于Gunicorn运行的Python框架需创建自定义启动命令。尝试在应用配置的启动命令字段中添加python app.py，但容器启动失败，错误日志如下：

2023-09-06T08:34:02.022Z INFO  - Waiting for response to warmup request for container whatschatgui_0_672c2d81. Elapsed time = 138.7764496 sec
2023-09-06T08:34:17.097Z INFO  - Waiting for response to warmup request for container whatschatgui_0_672c2d81. Elapsed time = 153.8518121 sec
2023-09-06T08:34:33.792Z INFO  - Waiting for response to warmup request for container whatschatgui_0_672c2d81. Elapsed time = 170.5465454 sec
2023-09-06T08:34:48.868Z INFO  - Waiting for response to warmup request for container whatschatgui_0_672c2d81. Elapsed time = 185.6226552 sec
2023-09-06T08:35:03.946Z INFO  - Waiting for response to warmup request for container whatschatgui_0_672c2d81. Elapsed time = 200.7001212 sec
2023-09-06T08:35:19.016Z INFO  - Waiting for response to warmup request for container whatschatgui_0_672c2d81. Elapsed time = 215.7710773 sec
2023-09-06T08:35:34.091Z INFO  - Waiting for response to warmup request for container whatschatgui_0_672c2d81. Elapsed time = 230.8458043 sec
2023-09-06T08:35:34.098Z ERROR - Container whatschatgui_0_672c2d81 for site whatschatgui did not start within expected time limit. Elapsed time = 230.8530481 sec
2023-09-06T08:35:34.115Z ERROR - Container whatschatgui_0_672c2d81 didn't respond to HTTP pings on port: 8000, failing site start. See container logs for debugging.
2023-09-06T08:35:36.786Z INFO  - Stopping site whatschatgui because it failed during startup.

• 确认Gradio监听端口：Azure App Service默认向端口8000发送健康检查请求，检查你的Gradio应用是否配置监听该端口。在app.py中启动Gradio时需指定端口为8000，示例代码：

  gr.Interface(...).launch(server_port=8000)
  

• 用Gunicorn适配启动：实际用Gunicorn启动Gradio更适配Azure环境，修改启动命令为：

  gunicorn --bind=0.0.0.0:8000 app:app
  

  注意app:app指Python文件名为app.py且Gradio的Interface对象赋值给变量app，若变量名不同需对应修改，比如app:demo。
• 检查依赖完整性：确保requirements.txt包含gradio和gunicorn（若用Gunicorn），确认部署时依赖已正确安装。
• 查看容器详细日志：进入Azure门户的App Service资源，查看容器标准输出日志，获取Gradio启动时的具体报错（如端口占用、依赖缺失等）。
• 确认启动命令路径：若app.py不在默认工作目录，启动命令需指定完整路径，比如python /home/site/wwwroot/app.py。

内容的提问来源于stack exchange，提问作者felfel