Heimdall change port number

[matuspu]

How can I change the port number where Heimdall dashboard is running? I need to change it from 7990 to standard 80 in http. Found this old question tteck/Proxmox#3865 but cannot find the configuration file and I cannot find neither apache2.conf nor httpd.conf Thank you!

[tremor021]

msg_info "Creating Service"
service_path="/etc/systemd/system/heimdall.service"
echo "[Unit]
Description=Heimdall
After=network.target

[Service]
Restart=always
RestartSec=5
Type=simple
User=root
WorkingDirectory=/opt/Heimdall
ExecStart="/usr/bin/php" artisan serve --port 7990 --host 0.0.0.0
TimeoutStopSec=30

[Install]
WantedBy=multi-user.target" >$service_path
systemctl enable -q --now heimdall
cd /opt/Heimdall
COMPOSER_ALLOW_SUPERUSER=1 composer dump-autoload &>/dev/null
systemctl restart heimdall.service
msg_ok "Created Service"

Edit the service file

[matuspu]

Thank you @tremor021! Worked like a charm.