documentation updates

docker-compose/prometheus/exporters/cadvisor/docker-compose.yml

@@ -0,0 +1,17 @@
+---
+version: '3'
+
+services:
+  cadvisor:
+    image: google/cadvisor:latest
+    container_name: cadvisor
+    # ports:
+    #   - "8080:8080"
+    volumes:
+      - /:/rootfs:ro
+      - /var/run:/var/run:ro
+      - /sys:/sys:ro
+      - /var/lib/docker/:/var/lib/docker:ro
+      - /dev/disk/:/dev/disk:ro
+    devices:
+      - /dev/kmsg