dotcloud/docker — pull request #539 by justone (2013-05-07 04:38:10+00:00)
Title: fix ByParent

The ByParent method wasn't building it's data correctly. The iterator function is handed the variable `image` and that was being overwritten by the parent lookup.

The way I spotted it was that some non-'head's were making it into `docker images`:

Before:

```
$ docker images
REPOSITORY TAG ID CREATED
ndj/couchdb latest 0645f350865e 4 days ago
ndj/sshd latest 1d5fc7dd9cc8 6 days ago
ndj/postgresql latest 9a33a1bfd3c0 4 days ago
ubuntu 12.04 8dbd9e392a96 3 weeks ago
ubuntu 12.10 b750fe79269d 6 weeks ago
ubuntu quantal b750fe79269d 6 weeks ago
ubuntu latest 8dbd9e392a96 3 weeks ago
ubuntu precise 8dbd9e392a96 3 weeks ago
984b07945695 4 days ago
491345fb39fc 6 days ago
82dd2a9db804 4 days ago
```

After:

```
$ docker images
REPOSITORY TAG ID CREATED
ndj/sshd latest 1d5fc7dd9cc8 6 days ago
ndj/postgresql latest 9a33a1bfd3c0 4 days ago
ubuntu latest 8dbd9e392a96 3 weeks ago
ubuntu 12.10 b750fe79269d 6 weeks ago
ubuntu quantal b750fe79269d 6 weeks ago
ubuntu 12.04 8dbd9e392a96 3 weeks ago
ubuntu precise 8dbd9e392a96 3 weeks ago
ndj/couchdb latest 0645f350865e 4 days ago
```