Use local_settings only if it exists.

run_daphne.sh

@@ -1,5 +1,9 @@
 #!/bin/sh
 
-export DJANGO_SETTINGS_MODULE=camera_site.local_settings
+if [ -f camera_site/local_settings.py ]
+then
+    export DJANGO_SETTINGS_MODULE=camera_site.local_settings
+fi
+
 daphne -u site.sock camera_site.asgi:application