Plugins/docker can't work

my config is :

- name:  make
  image: plugins/docker
    username: testuser
    password: testpassword
    auto_tag: true
    debug: true

no matter how I set it up,the results are the same.

time="2019-03-18T12:46:26Z" level=info msg="skipping automated docker build for refs/heads/wudaoren"

this is because you have auto_tag: true, and the auto tag parameter will only build and publish images for master and for tags. The plugin is therefore behaving as expected. You should remove the auto_tag behavior unless you want Drone to use Drone tagging conventions.