List inference registry credentials

import os
from gcore import Gcore

client = Gcore(
    api_key=os.environ.get("GCORE_API_KEY"),  # This is the default and can be omitted
)
page = client.cloud.inference.registry_credentials.list(
    project_id=1,
)
page = page.results[0]
print(page.project_id)

{
  "count": 1,
  "results": [
    {
      "name": "docker-io",
      "project_id": 1,
      "registry_url": "registry.example.com",
      "username": "username"
    }
  ]
}