Kube: create sidecar container to clean uploaded file

• uploaded file as emptyDir
• sidecar container in same pod as django ninja to delete uploaded files

https://medium.com/airwalk/cron-in-a-pod-6fdf6676c623

assigned to @rplanel

changed the description

created branch sidecar-to-clean-uploaded-files to address this issue

mentioned in merge request !14

closed