Connecting Grafana to Prometheus

Some more information - I hope it will help.
Diving into the Docker dashboard see attached screenshot I found that the Metric lookup in this case “container_cpu_user_seconds_total” is available on the Prometheus console but the query sort_desc(sum(rate(container_cpu_user_seconds_total{image!=“”}[1m])) by (name)) returns w/out data.
Any idea?