To bind port 80 for normal user in Linux, use 'authbind'
Steps:
1. sudo apt get authbind
2. sudo touch /etc/authbind/byport/80
3. sudo chown user:user /etc/authbind/byport/80
4. chmod 500 /etc/authbind/byport/80
5. authbind --deep <command to run> (e.g. quasar dev)