cleanup: fix Dockerfile COPY path, remove pycache

asr_agent/Dockerfile

@@ -2,6 +2,6 @@ FROM k8s.device.wenhq.top:8583/docker_r/asr-base:latest
 
 RUN pip install --no-cache-dir onnxruntime
 COPY whisper_asr/ ./whisper_asr/
-COPY conversation_worker.py ./worker.py
+COPY worker.py ./worker.py
 
 CMD ["python3", "worker.py", "--room", "asr-test"]