dotcloud/docker — pull request #3807 by pwaller (2014-01-28 14:34:04+00:00)
Title: Fix unclear error message when deleting container

I was getting the following error:

```
$ bundles/0.7.6-dev/binary/docker-0.7.6-dev run -rm -v=/var/run:/foo base
echo hi hi 2014/01/28 14:24:46 Error: container_delete: No such id: run
```

This commit makes the true origin of the error clearer. Issue #3806 is
tracking the cause of the error.

Docker-DCO-1.1-Signed-off-by: Peter Waller (github: pwaller)