Update Dockerfile

Dockerfile

@@ -26,4 +26,4 @@ ENV FLASK_RUN_HOST=0.0.0.0
 ENV FLASK_ENV=production
 
 # Start the app using environment PORT
-CMD ["flask", "run", "--host=0.0.0.0", "--port=${PORT:-7860}"]
+CMD ["python", "-m", "app.app"]