repaired create_admin script

create_admin.sh

@@ -1,3 +1,9 @@
 #!/bin/bash
 
-python3 mysite/manage.py shell -c "from django.contrib.auth.models import User; User.objects.create_superuser('admin', 'a@a.com', 'test1234')"
+if [ $# != 4 ] 
+then
+    echo "expected 4 arguments (webserver-pod-name, username, email, password)"
+    exit -1
+fi
+
+kubectl exec $1 -- python3 manage.py shell -c "from django.contrib.auth import get_user_model; User = get_user_model(); User.objects.create_superuser('$2', '$3', '$4')"