after updating my test project to beta8 (not without a huge pain), I finally managed to have my project up and running.
Now, every time I try to debug with IISExpress, I have explicitly point to the page "index.html" and this breaks my angularjs app.
There is a way to map index.html as default document in IIS Express?
I think you need to properly configure the middleware:
app.UseDefaultFiles();
It has some overrides if you need them. You can find more details here.