Which directories should be mounted in docker to persist flows?

[#1]

After having lost all my test work I decided it is time to investigate how to persist data in NiFi when running it in a docker image. I use the official image. This is what I managed to gather so far:

services:
  nifi:
    container_name: nifi
    image: apache/nifi:latest
    ports:
      - "8443:8443"
      - "16543:16543"
    volumes:
      - "C:/nifi/data:/data"
      - "C:/nifi/state:/opt/nifi/nifi-current/state"
      - "C:/nifi/database:/opt/nifi/nifi-current/database_repository"
      - "C:/nifi/flowfile:/opt/nifi/nifi-current/flowfile_repository"
      - "C:/nifi/content:/opt/nifi/nifi-current/content_repository"
      - "C:/nifi/provenance:/opt/nifi/nifi-current/provenance_repository"

When stopping/staring the container everything is OK (login credentials and content)

When removing the container, the credentials are persisted but the content is gone.

I presume that there is yet another directory that I should mount in order to have the data saved there. Which one is it?

[#2]

Flow definitions are saved in the `conf` dir and at least 2 different approaches can be mentioned to backup it: the first by manually `docker cp`its contents and mount them later as a volume at your next run, while the second leveraging the mount bind option of docker to automatically synchronize the `conf` dir contents with your local dir.