instruction: Create a comprehensive Dockerfile for storage applications with best practices
output: ```dockerfile
  from the Kubernetes conformance test image. Behaves in the same way as
  pod.spec.containers[*].image. Pull secrets will be assembled in the same way
  as for the container image by looking up node credentials, service account image
  pull secrets, and pod spec image pull secrets. This field is optional to allow
  higher level config management to default or override container images in
  workload controllers like Deployments and StatefulSets.
  More info about container imagespullPolicyPolicy for pulling OCI objects. Possible values are: Always, Never or
  IfNotPresent. Defaults to Always if :latest tag is specified, or
  IfNotPresent otherwise.See the Use an Image Volume With a Pod
  example for more details on how to use the volume source.iscsiAn iscsi volume allows an existing iSCSI (SCSI over IP) volume to be mounted
  into your Pod. Unlike emptyDir, which is erased when a Pod is removed, the
  contents of an iscsi volume are preserved and the volume is merely
  unmounted. This means that an iscsi volume can be pre-populated with data, and
  that data can be shared between pods.Note:You must have your own iSCSI server running with the volume created before you can use it.A feature of iSCSI is that it can be mounted as read-only by multiple consumers
  simultaneously. This means that you can pre-populate a volume with your dataset
  and then serve it in parallel
  ```