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Add note to volume docs that data is not copied to mounted volumes

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Signed-off-by: Candid Dauth <cdauth@cdauth.eu>
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Candid Dauth 2015-12-15 20:23:56 +01:00
parent 2180dd6cf0
commit efb763aa10
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docs/userguide/dockervolumes.md
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@ -29,7 +29,8 @@ containers that bypasses the [*Union File System*](../reference/glossary.md#unio
- Volumes are initialized when a container is created. If the container's - Volumes are initialized when a container is created. If the container's
base image contains data at the specified mount point, that existing data is base image contains data at the specified mount point, that existing data is
copied into the new volume upon volume initialization. copied into the new volume upon volume initialization. (Note that this does
not apply when [mounting a host directory](#mount-a-host-directory-as-a-data-volume).)
- Data volumes can be shared and reused among containers. - Data volumes can be shared and reused among containers.
- Changes to a data volume are made directly. - Changes to a data volume are made directly.
- Changes to a data volume will not be included when you update an image. - Changes to a data volume will not be included when you update an image.