anchor.diff:  
   This approach requires:
   
  -1. A regular process (eg. nightly) that mirrors the Docker images you need
  -2. Updating all pipelines to use the mirrored GCR image (eg from `nginx:1.14.2`
  +1. A regular process (e.g. nightly) that mirrors the Docker images you need
  +2. Updating all pipelines to use the mirrored GCR image (e.g. from `nginx:1.14.2`
      to `gcr.io/<GCR_PROJECT>/nginx:1.14.2`)
   
   ## Mirroring Docker images into AWS Elastic Container Registry
  
positive.code: DOCKER_LOGIN_PASSWORD="the-password"
  ```
  
  ## Other Buuildkite agents authenticating with a paid Docker Hub account
  
  All agents check the local filesystem for [hook scripts to execute during a job](/docs/agent/v3/hooks).
  
  
negative.code: AWS doesn't have specific documentation, however a similar solution to the one proposed by Google Cloud Platform (GCP)
  above would work with AWS Elastic Container Registry (ECR) as well:
  
  1. A regular process (e.g. nightly) that mirrors the Docker images you need
  2. Updating all pipelines to use the mirrored ECR image instead of the original one
  
  ## Configuring the docker daemon to use the GCR mirror of popular Docker Hub images
  
  GCP host a mirror of popular Docker Hub images in the `mirror.gcr.io` registry.
  
  For agents running on GCP, it's possible to configure docker to try the mirror
  first, and transparently fall back to the public Docker Hub registry when the
  