Doc Suggestion: Could add some link about the network in docker?

[fwhdzh]

There is an example about how to connect to MySQL from the MySQL command line client at the beginning of the document.

$ docker run -it --network some-network --rm mysql mysql -hsome-mysql -uexample-user -p

... where some-mysql is the name of your original mysql container (connected to the some-network Docker network).

Could we add some link about the option "--network" and network in Docker here?
I think these two links from Docker document are enough.
Networking overview
Use bridge networks

I think it would be helpful since some developer may come to this repository because they are asked by boss to deploy their database on Docker however they haven't know about Docker at all. Some links could save them much times to find the knowledge they need.

Thank you!

[wglambert]

Same as #644 (comment)