changed from bind-mount to volume

grafana/docker-compose.yml

@@ -5,7 +5,7 @@ services:
     container_name: grafana
     restart: unless-stopped
     volumes:
-      - ./data/grafana:/var/lib/grafana
+      - config:/var/lib/grafana
     networks:
       - traefik
       - grafana 
@@ -26,4 +26,7 @@ networks:
   traefik:
     external: true
   grafana:
-    driver: bridge
+    driver: bridge
+
+volumes:
+  config: