improved compose and entry point files

cntmanage/docker/entrypoint.sh

@@ -16,5 +16,12 @@ cp -v /app/static/* /var/www/static/
 echo "📁 Manually copying template files..."
 cp -rv /app/templates/ /var/www/templates/
 
+echo "👁️ Creating superuser..."
+if django-admin createsuperuser --noinput --email ${DJANGO_SUPERUSER_EMAIL} --username ${DJANGO_SUPERUSER_USERNAME}; then
+    echo "👁️ Superuser ${DJANGO_SUPERUSER_USERNAME} already created ..."
+else
+    echo "👁️ Superuser ${DJANGO_SUPERUSER_USERNAME} created successfully ..."
+fi
+
 echo "🚀 Launching Flightslot..."
 exec "$@"