Auto-seed catalog on container startup

Dockerfile

@@ -38,4 +38,4 @@ RUN mkdir -p $HOME/app/staticfiles $HOME/app/media
 EXPOSE 7860
 
 # Run migrations, collect static files, and start Gunicorn (all as user 1000)
-CMD ["sh", "-c", "python manage.py migrate && python manage.py collectstatic --noinput && gunicorn config.wsgi:application --bind 0.0.0.0:${PORT:-7860} --workers 2 --timeout 120"]
+CMD ["sh", "-c", "python manage.py migrate && python manage.py collectstatic --noinput && python manage.py reset_catalog && gunicorn config.wsgi:application --bind 0.0.0.0:${PORT:-7860} --workers 2 --timeout 120"]