Backup vaultwarden via ttionya/vaultwarden-backup

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Hi there,

I’m trying to backup my vaultwarden data via docker container ttionya/vaultwarden-backup.
I’ve followed the how-to but I have no clue how to handle the volume section.
Could anyone help me configuring the backup container?
Here is my docker-compose.yml

version: '3.8'

services:
  vaultwarden:
    image: vaultwarden/server:latest
    container_name: vaultwarden
    hostname: bf-srvpwd
    restart: always
    volumes:
      - /share/CACHEDEV1_DATA/Container/vaultwarden/data:/data
    environment:
      - TZ=Europe/Berlin
      - LOG_FILE=/data/vaultwarden.log
      - LOG_LEVEL=warn
      - WEBSOCKET_ENABLED=true
      - WEB_VAULT_ENABLED=true
      - ADMIN_TOKEN=***
      - SIGNUPS_ALLOWED=false
      - DOMAIN=https://pwd.***.de
      - ENABLE_DB_WAL=false
      - IP_HEADER=X-Real-IP
      - USE_SYSLOG=true
      - EXTENDED_LOGGING=true
      - PASSWORD_HINTS_ALLOWED=false
      - REQUIRE_DEVICE_EMAIL=true
      - ROCKET_PORT=1080
      - WEBSOCKET_PORT=3012
      - TEMPLATES_FOLDER=/data/templates
    depends_on:
      - fail2ban
    mac_address: 24:5E:BE:00:00:42
    networks:
      myBridgeNet:
        ipv4_address: 192.168.42.42

  vaultwarden-backup:
    image: ttionya/vaultwarden-backup:latest
    container_name: vaultwarden-backup
    restart: always
    environment:
      - TZ=Europe/Berlin
      - CRON=42 * * * *
      - BACKUP_KEEP_DAYS=30
      - DATA_DIR=/data
      - RCLONE_REMOTE_NAME=BitwardenBackup
      - RCLONE_REMOTE_DIR=/BitwardenBackup
      - ZIP_ENABLE=TRUE
      - ZIP_PASSWORD=***
      - ZIP_TYPE=7z
      - BACKUP_FILE_DATE_SUFFIX=--%Hh%Mm%Ss
    volumes:
      - /share/CACHEDEV1_DATA/Container/vaultwarden/data:/data
      - /share/CACHEDEV1_DATA/Container/vaultwarden-backup/config:/config
      - /share/CACHEDEV1_DATA/.zzz-backup/vaultwarden:/BitwardenBackup

networks:
  myBridgeNet:
    driver: qnet
    driver_opts:
      iface: "eth2"
    ipam:
      driver: qnet
      options:
        iface: "eth2"
      config:
        - subnet: 192.168.42.0/24
          gateway: 192.168.42.254