How to persist nifi flowfiles by using docker-compose?

right now I'm using nifi and its processors for some streaming stuff (mqtt listener, json evaluating, text replacement, write into db ...). I'm trying to persist the flowfiles and therefore I did some volume mapping (see below). But it doesn't work; after restarting the container it seems the flowfiles arent't saved ...

Could anybody give me a hint how to solve that problem?

nifi:
image: apache/nifi
restart: on-failure
ports:
  - "8000:8000"
networks:
  - traefik
environment:
  - NIFI_WEB_HTTP_PORT=8000
volumes:
  - nifi_conf:/opt/nifi/conf
  - nifi_state:/data/nifi/state
  - nifi_db:/opt/nifi/database_repository
  - nifi_flowfile:/opt/nifi/flowfile_repository
  - nifi_content:/opt/nifi/content_repository
  - nifi_provenance:/opt/nifi/provenance_repository 


volumes:
 nifi_provenance:{}
 nifi_flowfile: {}
 nifi_content: {}
 nifi_db: {}
 nifi_state: {}
 nifi_conf: {}

Thanks.

you could map docker container folders directly to the host machine like this:

services:
  nifi:
    ...
    volumes:
      - ./conf:/opt/conf
      - ./nifi_state:/data/nifi/state
      ...

no additional volume definition required

note that under windows with virtualbox this feature works only in the current user directory.