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Add registry to dev arch docs

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Cindy Pallares 🦉 2019-03-19 08:13:59 +00:00 committed by Achilleas Pipinellis
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doc/development/architecture.md
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@ -158,6 +158,18 @@ TODO
TODO
### Registry
The registry is what users use to store their own Docker images. The bundled
registry uses nginx as a load balancer and GitLab as an authentication manager.
Whenever a client requests to pull or push an image from the registry, it will
return a `401` response along with a header detailing where to get an
authentication token, in this case the GitLab instance. The client will then
request a pull or push auth token from GitLab and retry the original request
to the registry. Learn more about [token authentication](https://docs.docker.com/registry/spec/auth/token/).
An external registry can also be configured to use GitLab as an auth endpoint.
## GitLab by Request Type
GitLab provides two "interfaces" for end users to access the service: