Failed to change plugins/docker to private docker image

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In a private environment, I pushed plugins/docker to the private docker repository.

internal.bj.hub.com/ci/pluginsdocker:latest private environment public access

Here is the configuration file

  image: internal.bj.hub.com/ci/pluginsdocker:latest 
  settings:
    registry: internal.bj.hub.com
    username:
      from_secret: docker_username
    password:
      from_secret: docker_password
    repo: internal.bj.hub.com/democi/democi
    auto_tag: false
    force_tag: true
    tags: v1.2.3
    dockerfile: Dockerfile

image
image1268×638 70.1 KB

If I modified it to plugins/docker, It is working.
Is there something wrong with my configuration?