Add systemd configuration.

systemd/opendtu-logger.service

@@ -0,0 +1,39 @@
+  GNU nano 7.2                                                                          /etc/systemd/system/opendtu-logger.service                                                                                    
+[Unit]
+Description=OpenDTU Logger
+Documentation=https://git.hollander.online/energy/opendtu-logger
+After=network.target auditd.service
+
+# If using a PostgreSQL DB on the local machine, uncomment the following additional "After" and "Require" sections.
+## PostgreSQL
+# After=postgresql.service
+# Requires=postgresql.service
+
+[Service]
+RestartSec=10s
+Type=simple
+
+User=opendtu-logger
+Group=opendtu-logger
+
+Environment="REMOTE_URL=opendtu.local:80"
+Environment="DB_URL=host=localhost port=5432 user=postgres password=secret dbname=dtu sslmode=disable"
+Environment="TIMESCALEDB_ENABLED=true"
+Environment="TZ=Europe/Amsterdam"
+
+WorkingDirectory=/opt/opendtu-logger/
+ExecStart=/opt/opendtu-logger/opendtu-logger
+Restart=always
+
+# Isolate OpenDTU Logger from the rest of the system
+PrivateTmp=true
+PrivateDevices=true
+ProtectHome=true
+NoNewPrivileges=true
+ProtectSystem=strict
+
+# Only allow writes to the following directories
+ReadWritePaths=/opt/opendtu-logger/data/
+
+[Install]
+WantedBy=multi-user.target