Dockerfile Volume Definitions

Feature description

I am running into issues with the upstream VOLUME definitions in this Dockerfile making it very difficult to adjust user permissions and ownership of files within the volume directories as I am trying to create an OpenShift deployment using this image as a base. I was curious if the volume definitions could be removed from this Dockerfile, as that is the only way to remove the volumes for downstream usage of the NiFi image.

Benefits

Allows files within volume directories to be much more easily adjusted from RUN commands in downstream usage of this Docker image

Reference

https://boxboat.com/2017/01/23/volumes-and-dockerfiles-dont-mix/