Monitoring Stack: add prometheus nextcloud exporter

Docker/Docker-Compose/Monitioring/docker-compose.yml

@@ -83,3 +83,22 @@ services:
       options:
         loki-url: "http://localhost:3100/loki/api/v1/push"
         max-size: "200m"
+
+
+##############################################
+# Prometheus exporter for Nextcloud servers.
+# GitHub: https://github.com/xperimental/nextcloud-exporter
+##############################################
+  nextcloud-exporter:
+    image: ghcr.io/xperimental/nextcloud-exporter
+    links:
+      - prometheus
+    environment:
+      NEXTCLOUD_SERVER: ${NEXTCLOUD_SERVER}
+      NEXTCLOUD_AUTH_TOKEN: ${NEXTCLOUD_AUTH_TOKEN}
+    restart: unless-stopped
+    logging:
+      driver: loki
+      options:
+        loki-url: "http://localhost:3100/loki/api/v1/push"
+        max-size: "200m"