anchor.diff:  
   And then hook scripts under `hooks/`. A good example is the [docker plugin], which runs a command within a docker container.
   
  -The pipeline invocation looks like:
  +The pipeline invocation of this plugin looks like:
   
   ```yml
   steps:
  
positive.code: 
  The best place to get started is the [Buildkite Plugins] repository. You can also find third-party plugins with the `buildkite-agent` tag [on GitHub][third party plugins].
  
  We mostly write our plugins as shell scripts, so we've created a [plugin tester]
  docker image that simplifies writing BATS tests and getting your plugin tested (so meta).
  
  ### Anatomy of a plugin
  
  
negative.code:         workdir: /app
  ```
  
  The logic of the (simplified) [command hook][hooks] script in `hooks/command`:
  
  ```bash
  #!/bin/bash
  