Prometheus's best friend is Grafana. Grafana is open source, and so it provides a great interface for creating and exposing dashboards. It is mainly used for visualizing time series data with charts, pie charts, plots, bars, and gauges.
Grafana supports querying Prometheus. The Grafana data source for Prometheus has been included since Grafana 2.5.0, which was published on October 28, 2015.
Nonetheless, in a cloud container environment, infrastructure metrics are a must, so keeping an eye on the host running the containers must be a key point of the monitoring view.
There is an exporter of such metrics called Node-exporter, which exposes machine-level metrics from the system's kernel, CPU, memory, disk space, disk I/O, network bandwidth, and motherboard temperature.