Add userspace systemd unit

systemd/wegwichtel.service

@@ -0,0 +1,25 @@
+[Unit]
+Description=Wegwichtel
+After=network.target
+
+[Service]
+Type=simple
+
+WorkingDirectory=%h/Wegwichtel
+EnvironmentFile=%h/Wegwichtel/.env
+
+ExecStartPre=/usr/bin/npm ci
+ExecStartPre=/usr/bin/npm run test:runtime-db
+ExecStart=/usr/bin/env node %h/Wegwichtel/server.js
+
+Restart=on-failure
+RestartSec=5
+
+NoNewPrivileges=true
+PrivateTmp=true
+ProtectSystem=full
+
+ReadWritePaths=%h/Wegwichtel
+
+[Install]
+WantedBy=default.target