I'm encountering an issue during the deployment process of a private Docker image on Railway. The deployment fails with the following error:

Error:
"We were unable to connect to the registry for this image."

Context:

I’m using a private Docker image hosted on GitHub Container Registry (GHCR).
The error occurs during the "Deploy > Create container" step, as shown in the attached screenshot.
I’ve already added the necessary GitHub Personal Access Token (PAT) with read:packages and repo scopes to the Railway project settings.
Questions:

Is there a specific location or service setting in Railway where I should enter the GitHub PAT for it to be used during the deployment process? The thread on https://help.railway.app/questions/deploy-private-docker-image-c5d6c04d mentions entering credentials in the service settings, but it's unclear where this is exactly.
Do I need to configure anything else besides adding the PAT as a secret or environment variable? Are there additional settings required in Railway to ensure it can access the private registry?I am logged into Railway using GitHub, and I assumed this would provide access to GHCR automatically, but it seems like additional steps are necessary.

View Deploy details

ⓘ Deployment information is only viewable by project members and Railway employees.