Change gunicorn invocation in supervisord-apache2.conf

docker/supervisord-apache2.conf

@@ -6,7 +6,7 @@ redirect_stderr=true
 priority=3
 
 [program:gracedb]
-command=/usr/local/bin/gunicorn --reload --bind 127.0.0.1:8080 config.wsgi:application
+command=/usr/local/bin/gunicorn config.wsgi:application --reload --config /app/gracedb_project/config/gunicorn_config.py
 directory=/app/gracedb_project
 #user=www-data
 #group=www-data