Update DockerFile and add requirements.txt

DockerFile

@@ -32,4 +32,4 @@ ENV GRADIO_SERVER_NAME=0.0.0.0
 
 EXPOSE 7860
 
-CMD ["python", "src/app.py"]
+CMD ["python", "src/app2.py"]

requirements.txt

@@ -0,0 +1,2 @@
+gradio
+pandas