Calculate integrity in JS and CSS links of index.html on ember build #30

[bu3tt1]

ember build -p
without
SRI: { enabled: false, },

in ember-cli-build.js calculates an integrity check for js and css files that are linked in index.html.
This doesn't allow you to change the js and css code after the build, so you can't change the host in the container.

To put back the functionality find the way to calculate and add the integrity with the entrypoint

This was done to create the image in docker.

Specifications: https://developer.mozilla.org/en-US/docs/Web/Security/Subresource_Integrity