Closes #9296 adds a more detailed note about the mount behavior with -v flag
Signed-off-by: Andrew C. Bodine <acbodine@us.ibm.com>
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@ -51,8 +51,15 @@ directory from your own host into a container.
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$ sudo docker run -d -P --name web -v /src/webapp:/opt/webapp training/webapp python app.py
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This will mount the local directory, `/src/webapp`, into the container as the
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`/opt/webapp` directory. This is very useful for testing, for example we can
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This will mount the host directory, `/src/webapp`, into the container at
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`/opt/webapp`.
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> **Note:**
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> If the path `/opt/webapp` already exists inside the container's image, it's
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> contents will be replaced by the contents of `/src/webapp` on the host to stay
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> consistent with the expected behavior of `mount`
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This is very useful for testing, for example we can
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mount our source code inside the container and see our application at work as
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we change the source code. The directory on the host must be specified as an
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absolute path and if the directory doesn't exist Docker will automatically
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