With Cypress, you can easily create tests for your modern web applications, debug them visually, and automatically run them in your continuous integration builds.

Cypress Community

So instead of 
```require('dotenv').config()

module.exports = defineConfig({     
    e2e: {
        baseUrl: process.env.APP_URL,
    },
})```
I did this: 
```var dotenv = require('dotenv')
var dotenvExpand = require('dotenv-expand')

var myEnv = dotenv.config()
dotenvExpand.expand(myEnv)

module.exports = defineConfig({     
    e2e: {
        baseUrl: process.env.APP_URL,
    },
})```