Bootstrapping from a Private Docker Registry

You can bootstrap controller-0 from a private Docker registry in the event that your server is isolated from the public Internet.

Update your /home/sysadmin/localhost.yml bootstrap overrides file with the following lines to use a Private Docker Registry pre-populated from the Docker Registry:
```
docker_registries:
  k8s.gcr.io:
    url: <my-registry.io>/k8s.gcr.io
  gcr.io:
    url: <my-registry.io>/gcr.io
  quay.io:
    url: <my-registry.io>/quay.io
  docker.io:
    url: <my-registry.io>/docker.io
  docker.elastic.co:
  url: <my-registry.io>/docker.elastic.co
defaults:
    type: docker
    username: <your_my-registry.io_username>
    password: <your_my-registry.io_password>
```
Where <your\_my-registry.io\_username> and <your\_my-registry.io\_password> are your login credentials for the <my-registry.io> private Docker registry.

Note

<my-registry.io> must be a DNS name resolvable by the dns servers configured in the dns\_servers: structure of the ansible bootstrap override file /home/sysadmin/localhost.yml.
For any additional local registry images required, use the full image name as shown below.
```
additional_local_registry_images:
    docker.io/wind-river/<imageName>:<tag>
```