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Fix apparent copy paste mistake 

The note under the RUN header refers to the CMD instruction. It should refer to the RUN instruction instead.

Signed-off-by: Huu Nguyen <whoshuu@gmail.com>
This commit is contained in:
Huu Nguyen 2014-10-30 22:50:02 -04:00 committed by Tibor Vass
parent 7a545897fe
commit 86e72c6e06
1 changed files with 2 additions and 2 deletions
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4
docs/sources/reference/builder.md
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@ -238,9 +238,9 @@ commands using a base image that does not contain `/bin/sh`.
> **Note**:
> Unlike the *shell* form, the *exec* form does not invoke a command shell.
> This means that normal shell processing does not happen. For example,
> `CMD [ "echo", "$HOME" ]` will not do variable substitution on `$HOME`.
> `RUN [ "echo", "$HOME" ]` will not do variable substitution on `$HOME`.
> If you want shell processing then either use the *shell* form or execute
> a shell directly, for example: `CMD [ "sh", "-c", "echo", "$HOME" ]`.
> a shell directly, for example: `RUN [ "sh", "-c", "echo", "$HOME" ]`.
The cache for `RUN` instructions isn't invalidated automatically during
the next build. The cache for an instruction like