Dubbo service not export error of dubbo-samples-zookeeper

dubbo-samples-zookeeper provider serivce may not export services and not bind 20880 port, what's going on?

```
[11/01/21 05:53:29:029 UTC] main INFO bootstrap.DubboBootstrap: [DUBBO] DubboBootstrap has been initialized!, dubbo version: 2.7.7, current host: 172.24.0.2
[11/01/21 05:53:29:029 UTC] main INFO bootstrap.DubboBootstrap: [DUBBO] DubboBootstrap is starting..., dubbo version: 2.7.7, current host: 172.24.0.2
[11/01/21 05:53:29:029 UTC] main INFO bootstrap.DubboBootstrap: [DUBBO] DubboBootstrap is ready., dubbo version: 2.7.7, current host: 172.24.0.2
[11/01/21 05:53:29:029 UTC] main INFO bootstrap.DubboBootstrap: [DUBBO] DubboBootstrap has started., dubbo version: 2.7.7, current host: 172.24.0.2
dubbo service started
```

actions log: https://github.com/apache/dubbo-samples/pull/249/checks?check_run_id=1679339780
or here: [7_Run tests.txt](https://github.com/apache/dubbo-samples/files/5794278/7_Run.tests.txt)