Add OCI support tests

[hawksight]

Based on our call, @ribbybibby would like to add tests around the OCI fallback support once #159 is merged.

[github-actions]

This issue has been automatically marked as stale because it has not had
any activity in the last 90 days. It will be closed if no further activity
occurs. Thank you for your contributions.

[github-actions]

This issue has been automatically marked as stale because it has not had
any activity in the last 90 days. It will be closed if no further activity
occurs. Thank you for your contributions.