anchor.diff:  
   This will start up 3 containers and services:
   
  - * Prometheus (http://crunchy-prometheus:9090)
  - * Prometheus Promgateway (http://crunchy-promgateway:9091)
  - * Grafana (http://crunchy-grafana:3000)
  + * 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**.
  
positive.code: 
  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
  
  === Examples
  
  
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
  
  An example has been provided that runs a database container
  and also the associated metrics collection container, run the
  