Add enabling container registry FAQ answer (GoogleContainerTools#3500)

aivantsov · Nov 17, 2021 · 2649f19 · 2649f19
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diff --git a/docs/faq.md b/docs/faq.md
@@ -618,6 +618,8 @@ If the registry returns `401 Unauthorized` or `"code":"UNAUTHORIZED"`, it is oft
       - Configuring credential helpers: [`<from/to><credHelper>`](https://github.com/GoogleContainerTools/jib/tree/master/jib-maven-plugin#using-docker-credential-helpers) (Maven) / [`from/to.credHelper`](https://github.com/GoogleContainerTools/jib/tree/master/jib-gradle-plugin#using-docker-credential-helpers) (Gradle)
       - Specific credentials (not recommend): [`<from/to><auth><username>/<password>`](https://github.com/GoogleContainerTools/jib/tree/master/jib-maven-plugin#using-specific-credentials) or in [`settings.xml`](https://github.com/GoogleContainerTools/jib/tree/master/jib-maven-plugin#using-maven-settings) (Maven) / [`from/to.auth.username/password`](https://github.com/GoogleContainerTools/jib/tree/master/jib-gradle-plugin#using-specific-credentials) (Gradle)
       - These parameters can also be set through properties: [Maven](https://github.com/GoogleContainerTools/jib/tree/master/jib-maven-plugin#system-properties) / [Gradle](https://github.com/GoogleContainerTools/jib/tree/master/jib-gradle-plugin#system-properties)
+* For Google Cloud Registry (GCR), the Container Registry API is not yet enabled for your project.
+   - You enable the API from [Cloud Console](https://console.cloud.google.com/flows/enableapi?apiid=containerregistry.googleapis.com) or with the following [Cloud SDK](https://cloud.google.com/sdk/docs) command: `gcloud services enable containerregistry.googleapis.com`
 * `$HOME/.docker/config.json` may also contain short-lived authorizations in the `auths` block that may have expired. In the case of Google Container Registry, if you had previously used `gcloud docker` to configure these authorizations, you should remove these stale authorizations by editing your `config.json` and deleting lines from `auths` associated with `gcr.io` (for example: `"https://asia.gcr.io"`). You can then run `gcloud auth configure-docker` to correctly configure the `credHelpers` block for more robust interactions with gcr.
 * Different auth configurations exist in multiple places, and Jib is not picking up the auth information you are working on.
 * You configured a credential helper, but the helper is not on `$PATH`. This is especially common when running Jib inside IDE where the IDE binary is launched directly from an OS menu and does not have access to your shell's environment.