Description
I ran into some issues with GitHub Pages a while ago where my already finished project was changed again by GitHub Pages, because it was compiled again with Jekyll (result: .txt assets are just missing)
The solution was simple enough: Just add a .nojekyll file to the root of the output.
I am only starting out with angular-cli-ghpages, but I do believe putting that file would be a good idea. I put it always when the uploaded content is not meant to be compiled (again) with Jekyll, which should be every angular project.
From the GitHub Pages documentation:
If you publish your site from a source branch, GitHub Pages will use Jekyll to build your site by default. If you want to use a static site generator other than Jekyll, we recommend that you write a GitHub Actions to build and publish your site instead. Otherwise, disable the Jekyll build process by creating an empty file called .nojekyll in the root of your publishing source, then follow your static site generator's instructions to build your site locally.