Add container name in tfb for local metrics

[joanhey]

With Docker we can have realtime metrics from the bench in local.

We only need to run in another terminal dokcer stats , during the local benchmark.

The problem is that don't show an informative container_name, than it's different from the hostname that we need to maintain.

Which framework is running in the container tfb-server ?
Which database is running in the container tfb-database ?
Which container is running wrk?

I think that is easy to change, and it will help a lot in local metrics.

[joanhey]

TIP:
We can also have realtime graphical metrics using desktop apps like DockStation, Docker Desktop,...

And here show which docker image is using the container !!

PD: we are NOT using all the power of Docker.