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Remove the naming digression from the networking tutorial 

Fixes #575
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Misty Stanley-Jones 2016-11-16 17:02:21 -08:00 committed by GitHub
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@ -11,64 +11,6 @@ If you are working your way through the user guide, you just built and ran a
simple application. You've also built in your own images. This section teaches
you how to network your containers.
## Name a container
You've already seen that each container you create has an automatically
created name; indeed you've become familiar with our old friend
`nostalgic_morse` during this guide. You can also name containers
yourself. This naming provides two useful functions:
* You can name containers that do specific functions in a way
that makes it easier for you to remember them, for example naming a
container containing a web application `web`.
* Names provide Docker with a reference point that allows it to refer to other
containers. There are several commands that support this and you'll use one in an exercise later.
You name your container by using the `--name` flag, for example launch a new container called web:
$ docker run -d -P --name web training/webapp python app.py
Use the `docker ps` command to check the name:
$ docker ps -l
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
aed84ee21bde training/webapp:latest python app.py 12 hours ago Up 2 seconds 0.0.0.0:49154->5000/tcp web
You can also use `docker inspect` with the container's name.
$ docker inspect web
[
{
"Id": "3ce51710b34f5d6da95e0a340d32aa2e6cf64857fb8cdb2a6c38f7c56f448143",
"Created": "2015-10-25T22:44:17.854367116Z",
"Path": "python",
"Args": [
"app.py"
],
"State": {
"Status": "running",
"Running": true,
"Paused": false,
"Restarting": false,
"OOMKilled": false,
...
Container names must be unique. That means you can only call one container
`web`. If you want to re-use a container name you must delete the old container
(with `docker rm`) before you can reuse the name with a new container. Go ahead and stop and remove your old `web` container.
$ docker stop web
web
$ docker rm web
web
## Launch a container on the default network
Docker includes support for networking containers through the use of **network
@ -259,4 +201,4 @@ The `ping` shows it is contacting a different IP address, the address on the `my
## Next steps
Now that you know how to network containers, see [how to manage data in containers](dockervolumes.md).
Now that you know how to network containers, see [how to manage data in containers](dockervolumes.md).