Hi @tirelibirefe ,
port 80 (or rather all ports smaller that 1024) are privileged ports and should not be used by none privileged applications. If you want to expose sonarqube on port 80 i would recommend you to install a reverse proxy like nginx in front of sonarqube and proxy the requests.
user → nginx on port 80/443 → sonarqube on port 9000
there are config examples how to do that in our documentation.
hope that helps