anchor.diff:      name: string
     additionalProperties: false
   ```
  +{: codeblock-file="plugin.yml"
   
   The `configuration` property defines the validation rules for the plugin configuration using the [JSON Schema](https://json-schema.org) format. We’ve specified that the plugin has a single `name` property, of type `string`.
   
  
positive.code: ### Add a readme
  
  Next we'll add a `README.md` file to introduce the plugin to the world:
  
  ```shell
  touch README.md
  ```
  
  <%= render 'plugins/tutorial_readme' %>
  
  
negative.code:     volumes:
        - ".:/plugin:ro"
  ```
  {: codeblock-file="docker-compose.yml"
  
  You can now run the tests using the following command:
  
  