Update Dockerfile

Dockerfile

@@ -1,4 +1,4 @@
-# Read the doc: https://huggingface.co/docs/hub/spaces-sdks-docker
+## Read the doc: https://huggingface.co/docs/hub/spaces-sdks-docker
 # you will also find guides on how best to write your Dockerfile
 
 FROM python:3.9-slim
@@ -11,4 +11,8 @@ RUN pip install -r requirements.txt
 
 COPY. /app/
 
-CMD ["python", "app.py"]
+RUN apt-get update && apt-get install -y supervisor
+
+COPY supervisord.conf /etc/supervisor/conf.d/
+
+CMD ["supervisord", "-n"]