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Don't make the user get a container alreayd exists error

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Docker-DCO-1.1-Signed-off-by: SvenDowideit <SvenDowideit@home.org.au> (github: SvenDowideit)
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SvenDowideit 2014-07-07 10:28:53 +10:00
parent 42a28f79dc
commit 6a9c6d3bf1
1 changed files with 7 additions and 2 deletions
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9
docs/sources/userguide/dockerlinks.md
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@ -116,8 +116,8 @@ We can also use `docker inspect` to return the container's name.
> **Note:** > **Note:**
> Container names have to be unique. That means you can only call > Container names have to be unique. That means you can only call
> one container `web`. If you want to re-use a container name you must delete the > one container `web`. If you want to re-use a container name you must delete
> old container with the `docker rm` command before you can create a new > the old container with the `docker rm` command before you can create a new
> container with the same name. As an alternative you can use the `--rm` > container with the same name. As an alternative you can use the `--rm`
> flag with the `docker run` command. This will delete the container > flag with the `docker run` command. This will delete the container
> immediately after it stops. > immediately after it stops.
@ -133,6 +133,11 @@ container, this one a database.
Here we've created a new container called `db` using the `training/postgres` Here we've created a new container called `db` using the `training/postgres`
image, which contains a PostgreSQL database. image, which contains a PostgreSQL database.
We need to delete the `web` container we created previously so we can replace it
with a linked one:
$ docker rm -f web
Now let's create a new `web` container and link it with our `db` container. Now let's create a new `web` container and link it with our `db` container.
$ sudo docker run -d -P --name web --link db:db training/webapp python app.py $ sudo docker run -d -P --name web --link db:db training/webapp python app.py