DigitalOcean Container Registry

Storing container images in the DigitalOcean Container Registry.

The DigitalOcean container registry is a container registry flavor that comes built-in with the DigitalOcean ZenML integration and uses the DigitalOcean Container Registry (DOCR) to store container images.

When to use it

You should use the DigitalOcean container registry if:

• one or more components of your stack need to pull or push container images.
• your infrastructure runs on DigitalOcean — for example a DOKS cluster running the Kubernetes orchestrator that pulls pipeline images from DOCR.

How to deploy it

The flavor is provided by the DigitalOcean ZenML integration:

zenml integration install digitalocean -y

You also need a DOCR registry. In the DigitalOcean control panel, go to Container Registry and create one (each account has a single registry with a unique name). The registry URI has the form:

registry.digitalocean.com/<REGISTRY_NAME>

How to use it

To use the DigitalOcean container registry, you need:

• Docker installed and running.
• The registry URI (see above).

You can then register the container registry and use it in your active stack:

zenml container-registry register do_registry \
    --flavor=digitalocean \
    --uri=registry.digitalocean.com/<REGISTRY_NAME>

# Add the container registry to the active stack
zenml stack update -c do_registry

You also need to authenticate your local Docker client with DOCR. The simplest way is doctl:

doctl registry login

DOCR login credentials issued by doctl registry login are short-lived and expire after a while, so you may need to re-run the command. When pipeline images are pulled by a DOKS cluster, you can instead integrate the registry with the cluster so nodes authenticate automatically.

For more information and a full list of configurable attributes of the DigitalOcean container registry, check out the source code on GitHub.