Merge pull request #12851 from fazchow/patch-1

Update django.md

samples/django.md

@@ -133,6 +133,7 @@ In this step, you create a Django starter project by building the image from the
    $ ls -l
 
    drwxr-xr-x 2 root   root   composeexample
+   drwxr-xr-x 3 root   root   data
    -rw-rw-r-- 1 user   user   docker-compose.yml
    -rw-rw-r-- 1 user   user   Dockerfile
    -rwxr-xr-x 1 root   root   manage.py
@@ -142,9 +143,11 @@ In this step, you create a Django starter project by building the image from the
    If you are running Docker on Linux, the files `django-admin` created are
    owned by root. This happens because the container runs as the root user.
    Change the ownership of the new files.
+   
+   Do not change the permission of the data folder where Postgres has its file, otherwise Postgres will not be able to start due to permission issues.
 
    ```console
-   $ sudo chown -R $USER:$USER .
+   $ sudo chown -R $USER:$USER composeexample manage.py
    ```
 
    If you are running Docker on Mac or Windows, you should already