Invalid SHA-512 integrity after deployment

[hmaier-fws]

Issue

mdEditor Version (find version under settings): https://github.com/adiwg/mdEditor/tree/99f027be

mdEditor Web Address (enter the URL): Current DEVELOP branch deployed to gh-pages

Issue Description:

Browser throws error:

Failed to find a valid digest in the 'integrity' attribute for resource 'https://go.mdeditor.org/assets/vendor-c268ca4ccc457053f9f16d66a5743391.css' with computed SHA-512 integrity 'mmE9eEeu2uUCyyOLbutrLxnRnL5CrbF6OP1RDxShKbzYtbSSYfyM7FQFp0eN81Ig4yGQpV9yOPb83gBbeQSulA=='. The resource has been blocked.

and icons do not display:

Steps to reproduce (Bug reports only):

1. The application was built locally and renders as expected with no errors
2. When deployed to production the above behavior was observed
3. Behavior observed in both Chrome and Edge

Temporary work around:

The index.html (on the gh-pages branch) was manually edited to set the integrity value from a SHA to null:

<link rel="stylesheet" href="/assets/vendor-c268ca4ccc457053f9f16d66a5743391.css" integrity="" >

This seemed to provide a temporary fix and the page renders as expected.

[jwaspin]

 if (environment === 'production') {
    //ENV.rootURL = '/mdEditor';
    ENV.locationType = 'hash';
  }

That snippet starts on line 101 of config/environment.js

Looks like that might be the issue. Index.html is expecting a value for rootURL before adding /assets/vendor.css