instruction: Configure Kubernetes persistent volume storage with subPath
output: ```dockerfile
  from both containers and the host.Volumes are often a better choice than writing data directly to a container,
  because a volume doesn't increase the size of the containers using it. Using a
  volume is also faster; writing into a container's writable layer requires a
  storage driver to manage the
  filesystem. The storage driver provides a union filesystem, using the Linux
  kernel. This extra abstraction reduces performance as compared to using
  volumes, which write directly to the host filesystem.If your container generates non-persistent state data, consider using a
  tmpfs mount to avoid storing the data anywhere permanently, and to
  increase the container's performance by avoiding writing into the container's
  writable layer.Volumes use rprivate (recursive private) bind propagation, and bind propagation isn't
  configurable for volumes.A volume's lifecycleA volume's contents exist outside the lifecycle of a given container. When a
  container is destroyed, the writable layer is destroyed with it. Using a volume
  ensures that the data is persisted even if the container using it is removed.A given volume can be mounted into multiple containers simultaneously. When no
  running container is using a volume, the volume is still available to Docker
  and isn't removed automatically. You can remove unused volumes using docker volume prune.Mounting a volume over existing dataIf you mount a non-empty volume into a directory in the container in which
  files or directories exist, the pre-existing files are obscured by the mount.
  This is similar to if you were to save files into /mnt on a Linux host, and
  then mounted a USB drive into /mnt. The contents of /mnt would be obscured
  by the contents of the USB drive until the USB drive was unmounted.With containers, there's no straightforward way of removing a mount to reveal
  the obscured files again. Your best option is to recreate the container without
  the mount.If you mount an empty volume into a directory in the container in which files
  or directories exist, these files or directories are propagated (copied) into
  the volume by default. Similarly, if you start a container and specify a volume
  which does not already exist, an empty volume is created for you. This is a
  good way to pre-populate data that another container needs.To prevent Docker
  ```