updated: Thanks for all your helps, especially @Greg and @Yong
Now this systemd service has been enabled and just works.
I put a file on /etc/systemd/system/xxx.service whose content as,
[Unit]
Description=xxx Front
After=network.target
[Service]
Type=simple
Restart=always
RestartSec=5
User=corey
Group=corey
ExecStart=serve -s /home/corey/workspace/xxx-frontend/build
[Install]
WantedBy=multi-user.target
And run "systemctl enable xxx.service" then "systemctl start
xxx.service", and it works perfectly.
regards,
Corey
