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Clarify missing parent images (#2566) 

Fixes #636
This commit is contained in:
Misty Stanley-Jones 2017-03-30 15:13:44 -07:00 committed by GitHub
parent 8613c50dbe
commit 4c23e132f8
1 changed files with 4 additions and 3 deletions
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7
engine/userguide/storagedriver/imagesandcontainers.md
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@ -338,9 +338,10 @@ command.
> **Note**: Under the content addressable storage model introduced with Docker
> 1.10, image history data is no longer stored in a config file with each image
> layer. It is now stored as a string of text in a single config file that
> relates to the overall image. This can result in some image layers showing as
> "missing" in the output of the `docker history` command. This is normal
> behavior and can be ignored.
> relates to the overall image. This can result in some parent image layers showing as
> `missing` in the output of the `docker history` command. This is normal
> behavior and can be ignored. `missing` means that there is no local image
> associated with this history chain.
>
> You may hear images like these referred to as *flat images*.