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Add info to Mount a Host File as a Data Volume

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Docker-DCO-1.1-Signed-off-by: Tom Fotherby <github@tomfotherby.com> (github: tomfotherby)
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Tom Fotherby 2014-07-04 18:52:10 +01:00
parent 02ef9437d3
commit cfbe062eb2
1 changed files with 15 additions and 0 deletions
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docs/sources/userguide/dockervolumes.md
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@ -71,6 +71,21 @@ read-only.
Here we've mounted the same `/src/webapp` directory but we've added the `ro`
option to specify that the mount should be read-only.
### Mount a Host File as a Data Volume
As well as directories, the `-v` flag can be used to mount a single file from the host into a container.
$ sudo docker run --rm -it -v ~/.bash_history:/.bash_history ubuntu /bin/bash
This will drop you into a bash shell in a new container, you will have your bash history from your host and when
you exit the container the host will have the history of the commands typed while in the container.
> **Note:**
> The two-way binding of the mounted file will only be preserved as long as the inode doesn't change. Many
> tools used to edit files including `vi` and `sed --in-place` may result in a inode change. In the case where you
> want to edit the file, it is often best to mount the parent directory.
## Creating and mounting a Data Volume Container
If you have some persistent data that you want to share between