aardbei/doc/aardbei.serv...

[Unit]
Description=Aardbei-server
After=network.target

[Service]
User=aardbei
Group=aardbei
WorkingDirectory=/home/aardbei/aardbei
ExecStart=/home/aardbei/.rbenv/shims/puma

[Install]
WantedBy=multi-user.target