salt-formula/salt/files/salt-proxy.service

[Unit]
Description=Salt proxy minion
After=network.target

[Service]
Type=simple
ExecStart=/usr/bin/salt-proxy --proxyid %i
User=root
Group=root
Restart=always
RestartPreventExitStatus=SIGHUP
RestartSec=5

[Install]
WantedBy=multi-user.target