1. Install every site as local IIS website

2. Add following hosts entries:

   127.0.0.1 auth.sso.com 
   127.0.0.1 website1.sso website2.sso website3.sso website4.sso website5.sso website6.sso website7.sso website8.sso 
   127.0.0.1 website-pracuj.sso website-heading.sso website-cv.sso website-pracodawcy.sso
   127.0.0.1 website-a.shared.sso.com website-b.shared.sso.com
   127.0.0.1 public-api-cv-profile.sso
   127.0.0.1 internal-api-filestore.sso internal-api-offers.sso
   

3. Done