Serve angular assets from a specific url

I have a website (powered by Angular 9 and Universal), which is served from a domain. I want the assets to be served by our asset provider, instead of our current universal express server.

• https://{{locale}}.domain.com is the main entrypoint for our app
• https://somecdn.com/folder/{{locale}} is the main entrypoint for our assets

It means if we have this kind of asset locally:

app/
  somechunk.js
  assets/
    style.css

Then it should be served from the urls

https://assets.otherdomain.com/app/{{locale}}/assets/style.css
https://assets.otherdomain.com/app/{{locale}}/somechunk.js

I tried few things with baseHref without success. Don't know if it's possible with some angular options, or if I should add some custom build step to update these url...

Any idea? Thanks a lot

PS: some useful resource I run into while searching for a solution to this issue:

• https://github.com/angular/angular-cli/pull/16332
• https://github.com/angular/angular-cli/issues/17737
• https://github.com/angular/angular-cli/blob/master/docs/design/deployurl-basehref.md