added gitlab to my setup and configured it

docker-compose/monitoring-grafana-promethues-cadvisor-node-exporter/prometheus.yml

@@ -0,0 +1,23 @@
+global:
+  scrape_interval: 15s
+
+scrape_configs:
+  - job_name: 'prometheus'
+    static_configs:
+      - targets: ['localhost:9090']
+
+  - job_name: 'cadvisor'
+    static_configs:
+      - targets: ['cadvisor:8080']
+
+  - job_name: 'node_exporter'
+    static_configs:
+      - targets: ['node-exporter:9100']
+
+  - job_name: 'gitlab'
+    metrics_path: '/-/metrics'
+    static_configs:
+      - targets: ['192.168.100.6:8929']
+  - job_name: 'gitlab-runner'
+    static_configs:
+      - targets: ['192.168.100.6:9252'] # Or your runner container name/IP