Cloud Native Application Bundles are new, and support for storing anything other than container images in a registry is inconsistent. The community has tested a bunch of registries for compatibility with CNAB and so far here is what we have found.
Registries that are OCI compliant should work with CNAB just fine. CNAB doesn’t have additional requirements beyond that. Each registry below has been verified using a CNAB tool that uses the cnab-to-oci library.
|Azure Container Registry (ACR)||Yes|
|DigitalOcean Container Registry||Yes|
|Amazon Elastic Container Registry (ECR)||No|
|Google Cloud Registry (GCR)||Yes|
If you have tried out a registry and have an update for us, please let us know !