| `CUSTOM_DOMAIN` | The custom domain to assign a `$VERCEL_ENV_GENERATED_URL` to it. ⚠️ `$VERCEL_ENV_GENERATED_URL` must also be set | `10.5.0` |
| `IMAGE_TAG` | The default tag for the node docker image | `16.16.0` |
## Troubleshooting
!!! info "You don't have access to the domain <domain_name> under <scope_slug>"
This error can occur when you have set a `VERCEL_TOKEN` with the `Full account` scope but want to deploy to use a domain set inside one of your `Vercel Teams`.
To fix it you must set `$TEAM_SLUG_SCOPE` with the `Team slug` containing your domain