Go to https://orcid.org/developer-tools and create new Application. While creating new application in Redirect URI field you have to fill http://localhost:5000/orcid_auth_callback. It will generate Client ID and Client Secret, using those values set your environment variable in default.env
Run npm start and then open up http://localhost:5000/request-orcid-user-auth, this will redirect orcid website where you have to sign in, after that you would be redirected back.
Then open up http://localhost:5000/user, this will return a json object with your orcid.
Run npm start, and open up mongo shell in your terminal. It would connect you with the test database. Then follow these steps.
db.users.insert({"name":"Your name", "orcid":"Your ORCID", "role":"publisher"})