tech(docker): add node exporter to prometheus

docker/blocks/prometheus/fig

@@ -6,6 +6,12 @@ prometheus:
   volumes:
     - /var/docker/prometheus:/prometheus-data
 
+node_exporter:
+  image: prom/node-exporter
+  net: bridge
+  ports:
+    - "9100:9100"
+
 fake-prometheus-data:
   image: grafana/fake-data-gen
   net: bridge

docker/blocks/prometheus/prometheus.yml

@@ -23,4 +23,4 @@ scrape_configs:
     # scheme defaults to 'http'.
 
     target_groups:
-      - targets: ['localhost:9090', '172.17.0.1:9091']
+      - targets: ['localhost:9090', '172.17.0.1:9091', '172.17.0.1:9100']