anchor.diff:  
   When running crunchy-metrics, the following ports are available:
   
  - * crunchy-prometheus:9090 - the Prometheus web user interface
  - * crunchy-promgateway:9091 - the Prometheus pushgateway REST API
  - * crunchy-grafana:3000 - the Grafana web user interface
  + * http://crunchy-metrics:9090 - the Prometheus web user interface
  + * http://crunchy-metrics:9091 - the Prometheus pushgateway REST API
  + * http://crunchy-metrics:3000 - the Grafana web user interface
   
   === Examples
   
  
positive.code: 
  This will start up 3 containers and services:
  
   * Prometheus (http://crunchy-prometheus:9090)
   * Prometheus Promgateway (http://crunchy-promgateway:9091)
   * Grafana (http://crunchy-grafana:3000)
  
  An example has been provided that runs a database container
  and also the associated metrics collection container, run the
  
negative.code: 
  This will start up 3 containers and services:
  
   * http://crunchy-metrics:9090 - the Prometheus web user interface
   * http://crunchy-metrics:9091 - the Prometheus pushgateway REST API
   * http://crunchy-metrics:3000 - the Grafana web user interface
   
  When accessing the Grafana web application, the default user credentials will be
  the username **admin** and the password **admin**.
  