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Referencing an image from Topaz Config

Topaz uses OPA as a library, so configuring Topaz to download an OCI image works exactly the same way as it does for OPA.

For Topaz, the OPA configuration is placed in a opa: section in the Topaz config file.

Example: ghcr.io

To set up ghcr.io as the source for the policy image that Topaz will retrieve, you can use the following Topaz config:

opa:
instance_id: "-"
graceful_shutdown_period_seconds: 2
local_bundles:
paths: []
skip_verification: true
config:
services:
ghcr-registry:
url: https://ghcr.io
type: oci
response_header_timeout_seconds: 5
credentials:
bearer:
scheme: "Basic"
token: "iDog"
bundles:
policy-todo:
service: ghcr-registry
resource: "ghcr.io/aserto-templates/policy-todo-rebac:latest"
persist: false
config:
polling:
min_delay_seconds: 60
max_delay_seconds: 120

To access private images, you'll need to provide credentials for the ghcr-registry service:

opa:
instance_id: "-"
graceful_shutdown_period_seconds: 2
local_bundles:
paths: []
skip_verification: true
config:
services:
ghcr-registry:
url: https://ghcr.io
type: oci
response_header_timeout_seconds: 5
credentials:
bearer:
scheme: "Bearer"
token: "<PAT>"
bundles:
policy-todo:
service: ghcr-registry
resource: ghcr.io/${ORGANIZATION}/${REPOSITORY}:${TAG}
persist: false
config:
polling:
min_delay_seconds: 60
max_delay_seconds: 120

For registries that only support basic authentication, you can pass the credentials as follows:

    credentials:
bearer:
scheme: "Basic"
token: "<username>:<password>"