Add Linux server monitor dashboard

deploy/server-monitor.service

@@ -0,0 +1,37 @@
+[Unit]
+Description=Server Monitor dashboard (Linux metrics on 1024x768)
+Documentation=file:/opt/server-monitor/README.md
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+Type=simple
+WorkingDirectory=/opt/server-monitor
+EnvironmentFile=-/etc/server-monitor.env
+Environment=PYTHONUNBUFFERED=1
+Environment=PYTHONDONTWRITEBYTECODE=1
+ExecStart=/usr/bin/python3 /opt/server-monitor/monitor.py --bind 0.0.0.0 --port 8787
+Restart=on-failure
+RestartSec=2s
+TimeoutStopSec=8s
+
+# The dashboard only reads /proc, /sys and mount statistics.
+DynamicUser=yes
+NoNewPrivileges=yes
+PrivateTmp=yes
+PrivateDevices=yes
+ProtectSystem=strict
+ProtectHome=read-only
+ProtectKernelTunables=yes
+ProtectKernelModules=yes
+ProtectControlGroups=yes
+RestrictAddressFamilies=AF_INET AF_INET6 AF_UNIX
+RestrictNamespaces=yes
+LockPersonality=yes
+SystemCallArchitectures=native
+CapabilityBoundingSet=
+AmbientCapabilities=
+UMask=0077
+
+[Install]
+WantedBy=multi-user.target