instruction: Create a comprehensive Dockerfile for storage applications with best practices
output: ```dockerfile
  from the volume's mountPath and the path
  keyed with log_level.Note:You must create a ConfigMap
  before you can use it.A ConfigMap is always mounted as readOnly.A container using a ConfigMap as a subPath volume mount will not
  receive updates when the ConfigMap changes.Text data is exposed as files using the UTF-8 character encoding.
  For other character encodings, use binaryData.downwardAPIA downwardAPI volume makes downward API
  data available to applications. Within the volume, you can find the exposed
  data as read-only files in plain text format.Note:A container using the downward API as a subPath volume mount does not
  receive updates when field values change.See Expose Pod Information to Containers Through Files
  to learn more.emptyDirFor a Pod that defines an emptyDir volume, the volume is created when the Pod is assigned to a node.
  As the name says, the emptyDir volume is initially empty. All containers in the Pod can read and write the same
  files in the emptyDir volume, though that volume can be mounted at the same
  or different paths in each container. When a Pod is removed
  ```