issue #45 fix

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

@@ -3,7 +3,7 @@ version: '3'
 
 services:
   cadvisor:
-    image: google/cadvisor:latest
+    image: gcr.io/cadvisor/cadvisor:latest
     container_name: cadvisor
     # ports:
     #   - "8080:8080"