**Problem:**
There are two kubelet scraping targets on Prometheus, one is scraping `/metrics`, another one is scraping `/metrics/cadvisor`.
The metrics from `/metrics` endpoint are not including `container_name`.
So the `container_*` expression will double the actual mount without
`conatiner_name!=""`

**Solution:**
Add `container_name!=""` into the expression

**Issue:**
https://github.com/rancher/rancher/issues/20162