create this file:
/etc/nginx/sites-available/crp-pmte-stage.spatialdevmo.com
This file will handle visits to crp-pmte-stage.spatialdevmo.com. A Node.js app running on port 5000 needs to be served. Give the file this content:
upstream crp-pmte-stage {
server 127.0.0.1:5000;
}