Update Dockerfile

Dockerfile

@@ -20,4 +20,4 @@ RUN rm -rf .gitlab-ci.yml Dockerfile README.md img
 # We use the CMD command to start the gunicorn daemon
 # when we start the container.
 # Note the $PORT variable, we will need to define it when we start the container
-CMD python manage.py runserver 0.0.0.0:$PORT
+CMD python /app/manage.py runserver 0.0.0.0:$PORT