This utility was created for printing basic information about your OS to the console.
You can run container whith two parameters: cpu mem
$ docker run pymetrics metrics cpu
will show something like this:
system.cpu.idle 5275.64
system.cpu.user 4.81
system.cpu.guest 0.0
system.cpu.iowait 4.0
system.cpu.stolen 0.0
system.cpu.system 11.73