Update Dockerfile

Dockerfile

@@ -20,7 +20,7 @@ COPY generator.py /app/
 COPY app.py /app/
 
 # Make port 8080 available to the world outside this container
-EXPOSE 7960
+EXPOSE 8080
 
 # Run generator.py and flask run when the container launches
-CMD python3 -u generator.py & python3 -u -m flask run --host=0.0.0.0 --port=8080
+CMD ["python3", "app.py"]