Hey @zyc130130! I'm here to assist you with any bugs, questions, or contributions. Feel free to ask for help while we wait for a human maintainer.

To ensure that knowledge base files are completely removed from the "docker" directory under the "volumes" section when you delete them in Dify version 0.6.9, you need to manually delete the corresponding files from the mounted volume directory on the host machine. The relevant volume for storing user files is defined in the docker-compose.yaml file as follows:

volumes:
  # Mount the storage directory to the container, for storing user files.
  - ./volumes/app/storage:/app/api/storage

This means that the files are stored in the ./volumes/app/storage directory on your host machine. To completely remove the knowledge base files, you should delete the files from this directory.

Here is a step-by-step guide:

1. Navigate to the volumes/app/storage directory on your host machine.
2. Identify and delete the specific knowledge base files you want to remove.

For example, you can use the following command in a Unix-based system to delete a specific file:

rm ./volumes/app/storage/path/to/your/knowledge_base_file

Or to delete all files in the storage directory:

rm -rf ./volumes/app/storage/*

Make sure to replace path/to/your/knowledge_base_file with the actual path to the file you want to delete ^[1].

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mark it to the feature list

@zyc130130 it has fixed， pr below：
#5882