add new param (--filter-regexp),filter the containers by container name

[mathli]

in the docker host,many containers have not set label.we must filter the containers which ones we want.

[josegonzalez]

Why not just add the label when running the containers? Most, if not all, schedulers support this.

[adriankrupa]

@josegonzalez what do you mean by adding the label? I found this feature very useful - I've configured docker-compose to deploy 2 consul servers simulating 2 dc. I need 2 registrators to register some services to dc1, and some to dc2. It's very helpful to filter services by some prefix/suffix