Prisma Cloud Compute: How to enable registry scanning for self-hosted gitlab container registry

Initial setup of gitlab container registry scanning results in the following error. Instructions are not clear as to what to define in the registry settings:

Error: failed to list repositories for group elite: received status 404 Not Found for api /api/v4/groups/<group>/registry/repositories?per_page=100, 404 page not found

• PC enterprise SAAS
• PC compute edition self-hosted

The public article on how to set-up gitlab container registry scanning is not entirely representative of how to set-up scanning for a self-hosted gitlab here.

1. Make sure gitlab container registry is publicly accessible on the port (usually 443 or 5050)
2. Input container registry address in "Registry" (ex. https://1.22.333.444:5050)
3. Input gitlab IP in API domain (ex. https://1.22.333.444:443)
4. Input one of User ID, Group ID, or Project ID
5. Generate personal access token and input in Credential. Give at least read_api permissions.
6. Scan

Alternatively, you may also scan via Docker Registry v2. You will need to define gitlab container registry IP in Registry (ex. https://1.22.333.444:5050), Credential as basic token auth, and a CA certificate to scan.