docs: def file_cmd(context, yes, file_id):
      """Delete a file."""
      file_obj = context.obj['store'].File.get(file_id)
      if file_obj.is_included:
          question = f"remove file from file system and database: {file_obj.full_path}"
      else:
          question = f"remove file from database: {file_obj.full_path}"
      if yes or click.confirm(question):
          if file_obj.is_included and Path(file_obj.full_path).exists():
              Path(file_obj.full_path).unlink()
  
          file_obj.delete()
          context.obj['store'].commit()
          click.echo('file deleted')