custom jails and filter not loaded

[MPatzek]

Hey,
maybe I am too dumb, but I am trying to run this fail2ban images with nextcloud using docker-compose. I use the following folder structure:
nextcloud/app

• nextcloud folder with the log
  nextcloud/fail2ban
  -- filter.d
  **** nextcloud.conf
  -- jail.d
  **** jail.conf

The part of my docker-compsoe file:
fail2ban: image: crazymax/fail2ban:latest container_name: nextcloud-fail2ban networks: - nextcloud_network cap_add: - NET_ADMIN - NET_RAW volumes: - nextcloud/fail2ban:/data - nextcloud/app/data:/var/log:ro env_file: - ./fail2ban.env restart: unless-stopped

wenn running the compose I see the following log:
Setting timezone to Europe/Berlin... Setting SSMTP configuration... WARNING: SSMTP_HOST must be defined if you want fail2ban to send emails Initializing files and folders... Setting Fail2ban configuration... Checking for custom actions in /data/action.d... Checking for custom filters in /data/filter.d... 2020-07-22 15:28:15,557 fail2ban.configreader [1]: INFO Loading configs for fail2ban under /etc/fail2ban 2020-07-22 15:28:15,558 fail2ban.configparserin [1]: INFO Loading files: ['/etc/fail2ban/fail2ban.conf'] 2020-07-22 15:28:15,559 fail2ban.configparserin [1]: INFO Loading files: ['/etc/fail2ban/fail2ban.conf'] 2020-07-22 15:28:15,560 fail2ban [1]: INFO Using socket file /var/run/fail2ban/fail2ban.sock 2020-07-22 15:28:15,560 fail2ban [1]: INFO Using pid file /var/run/fail2ban/fail2ban.pid, [INFO] logging to STDOUT 2020-07-22 15:28:15,563 fail2ban.configreader [1]: INFO Loading configs for jail under /etc/fail2ban 2020-07-22 15:28:15,564 fail2ban.configparserin [1]: INFO Loading files: ['/etc/fail2ban/jail.conf'] 2020-07-22 15:28:15,579 fail2ban.configparserin [1]: INFO Loading files: ['/etc/fail2ban/paths-debian.conf'] 2020-07-22 15:28:15,580 fail2ban.configparserin [1]: INFO Loading files: ['/etc/fail2ban/paths-common.conf'] 2020-07-22 15:28:15,582 fail2ban.configparserin [1]: INFO Loading files: ['/etc/fail2ban/paths-overrides.local'] 2020-07-22 15:28:15,583 fail2ban.configparserin [1]: INFO Loading files: ['/etc/fail2ban/paths-common.conf', '/etc/fail2ban/paths-debian.conf', '/etc/fail2ban/jail.conf'] 2020-07-22 15:28:15,628 fail2ban.server [1]: INFO -------------------------------------------------- 2020-07-22 15:28:15,629 fail2ban.server [1]: INFO Starting Fail2ban v0.11.1 2020-07-22 15:28:15,630 fail2ban.observer [1]: INFO Observer start... 2020-07-22 15:28:15,637 fail2ban.database [1]: INFO Connected to fail2ban persistent database '/data/db/fail2ban.sqlite3' Server ready

Executing docker exec -t nextcloud-fail2ban fail2ban-client status results in
Status |- Number of jail: 0 - Jail list:
`

Is my path configuration wrong? Or where is my mistake?

with best regards