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Closes #9296 adds a more detailed note about the mount behavior with -v flag

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Signed-off-by: Andrew C. Bodine <acbodine@us.ibm.com>
Upstream-commit: efb8e8a34550b80a567e7b69ad6bb2644d5a9b09
Component: engine
This commit is contained in:
Andrew C. Bodine
2014-11-24 23:41:49 -08:00
parent aba2469af0
commit e165ded13e
1 changed files with 9 additions and 2 deletions
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11
components/engine/docs/sources/userguide/dockervolumes.md
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@ -51,8 +51,15 @@ directory from your own host into a container.
$ sudo docker run -d -P --name web -v /src/webapp:/opt/webapp training/webapp python app.py
This will mount the local directory, `/src/webapp`, into the container as the
`/opt/webapp` directory. This is very useful for testing, for example we can
This will mount the host directory, `/src/webapp`, into the container at
`/opt/webapp`.
> **Note:**
> If the path `/opt/webapp` already exists inside the container's image, it's
> contents will be replaced by the contents of `/src/webapp` on the host to stay
> consistent with the expected behavior of `mount`
This is very useful for testing, for example we can
mount our source code inside the container and see our application at work as
we change the source code. The directory on the host must be specified as an
absolute path and if the directory doesn't exist Docker will automatically