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Merge pull request #15337 from phemmer/doc-builder-volume

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add documentation clarifying behavior of VOLUME instruction
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moxiegirl 2015-08-18 09:42:00 -07:00
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docs/reference/builder.md
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@ -906,6 +906,10 @@ This Dockerfile results in an image that causes `docker run`, to
create a new mount point at `/myvol` and copy the `greeting` file
into the newly created volume.
> **Note**:
> If any build steps change the data within the volume after it has been
> declared, those changes will be discarded.
> **Note**:
> The list is parsed as a JSON array, which means that
> you must use double-quotes (") around words not single-quotes (').