Hey 🙂 I am looking at deploying a Nextjs application as a Google Cloud Run Service. https://next-auth.js.org/ I am using this for authentication, and one of the environment variables that is needed is

NEXTAUTH_URL

which should be the URL used on deployed instance, however, for my staging environment this is dynamic and not known e.g.

const app = new gcp.cloudrun.Service(`app`, {
  location,
  template: {
    spec: {
      containers: [
        {
          // Use pushed image from CI (assume local if not)
          image: pulumi.interpolate`<http://gcr.io/${gcp.config.project}/app:${prNumber}|gcr.io/${gcp.config.project}/app:${prNumber}>`,
          ports: [{ containerPort: 3000 }],
          resources: {
            limits: {
              memory: `1Gi`,
            },
          },
        },
      ],
      containerConcurrency: 50,
    },
  },
  metadata: {
    annotations: {
      "<http://run.googleapis.com/cloudsql-instances|run.googleapis.com/cloudsql-instances>": pgInstance.connectionName,
    },
  },
});

e.g. yields https://some-chars.a.run.app and is available as

// Export the URL
export const appUrl = app.statuses[0].url;

But I am not sure you can include setting this back to the cloud run env variable?

It sounds like you want to use the resource outputs of an object that doesn't exist yet, to create that object. Which is obviously not going to work. Based on https://next-auth.js.org/getting-started/example,

NEXTAUTH_URL

looks intended to be a "friendly" name for a user to interact with. My guess is you need to pick a friendly name

<http://blah.mydomain.com|blah.mydomain.com>

and then create a the dns entry by hand or based on the output of

app.statuses[0].url.get()

.

Yeah it looks like best approach is to include a

DomainMapping

and then this way I can categorically know what my domain will be e.g.

<http://staging.domain.com|staging.domain.com>

and not use the dynamic url's that are output, this way it is safe. I think that this has to be set for production deploys rather than for users (AFAIK) - bit of a funny req