EAS env issue

Summary

eas build does not inject evironment variables when evaluation app.config.js

Steps to reproduce

My eas.json looks like:

{
  "build": {
    "release": {},
    "staging": {
      "developmentClient": true,
      "distribution": "internal",
      "env": {
        "ENVIRONMENT": "staging"
      }
    }
  },
  "submit": {
    "release": {}
  }
}

Notice the "ENVIRONMENT" variables is set to "staging"

When I run eas build --profile staging --platform android my app.config.js throws an error because the "ENVIRONMENT" is undefined.

Error: Error reading Expo config at /Users/Boris/Dev/ClickView/expo-eas-env-issue/app.config.js:

Environment "undefined" is not supported. Set the environment variable named "ENVIRONMENT" and try again.

I believe this has something to do with the customized metro.config.js