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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>
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Andrew C. Bodine 2014-11-24 23:41:49 -08:00
parent 27127437a6
commit efb8e8a345
1 changed files with 9 additions and 2 deletions
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11
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