Thanks for the explanantion
the script didn’t run because i had ths error
bash install.sh ghcr.io/nethserver/core:latest ghcr.io/nethserver /traefik:setting-backoff-on-init
Checking port 80 and 443 are not already in use
Installation failed: port 80 is already in use.
After stopping apache service the script runs and i could acces NS