Quickly protecting an Express HTTP server with GitHub authentication via Auth0.

1. Set up an Auth0 tenant, create a web application, and then follow the Quick Start for Node.js tutorial.

   After you complete the tutorial, you will get a usable express-openid-connect config.

2. The tutorial suggests you to use authRequired: false. Change that to true.

3. Also add session: { cookie: { secure: true } }, to config to make sure cookie is Secure and never sent unencrypted.

4. Allow single user by using the claimEquals endpoint by checking against the sub (subject) claim of the JWT:

   const { claimEquals } = require('express-openid-connect')
   app.use(claimEquals('sub', 'github|193136'))

   You can obtain the sub value by going to the Users section inside Auth0 control panel, and copy out the id.