Can't backup multiple schemas with a singular fie

[roip-rms]

Summary

Can't backup multiple schemas with a singular fie, tried multiple configurations in docker-compose but it always backs up in multiple files - each schema in it's own file.

I'm using MariaDB and docker-compose:

  example-db-backup:
    container_name: example-db-backup
    image: tiredofit/db-backup
    volumes:
      - ./backups:/backup
      #- ./post-script.sh:/assets/custom-scripts/post-script.sh
    environment:
      # - TIMEZONE=America/Vancouver
      - CONTAINER_NAME=example-db-backup
      - CONTAINER_ENABLE_MONITORING=FALSE
      # - DEBUG_MODE=TRUE
      # - BACKUP_JOB_CONCURRENCY=1     # Only run one job at a time
      - DEFAULT_CHECKSUM=NONE        # Don't create checksums
      # - DEFAULT_COMPRESSION=ZSTD     # Compress all with ZSTD
      # - DEFAULT_BACKUP_INTERVAL=1440   # Backup every 1440 minutes
      # - DEFAULT_BACKUP_BEGIN=0000      # Start backing up at midnight
      # - DEFAULT_CLEANUP_TIME=8640    # Cleanup backups after a week

      - DB01_TYPE=mariadb
      - DB01_HOST=77.81.46.124
      - DB01_NAME=ALL
      - DB01_NAME_EXCLUDE=sys,mysql,performance_schema,information_schema
      - DB01_SPLIT_DB=FALSE
      - DB01_USER=example
      - DB01_PASS=examplepassword
      - DB01_BACKUP_INTERVAL=30        # (override) Backup every 30 minutes
      - DB01_BACKUP_BEGIN=+1           # (override) Backup starts immediately
      - DB01_CLEANUP_TIME=21600        # (override) Cleanup backups they are older than 180 minutes
      # - DB01_CHECKSUM=SHA1           # (override) Create a SHA1 checksum
      - DB01_COMPRESSION=GZ          # (override) Compress with GZIP

    restart: always

• Image version / tag: 4.0.35
• Host OS: RHEL 8.2

Thanks in advance!