Update openid-connect.md

_security/authentication-backends/openid-connect.md

@@ -439,16 +439,26 @@ config:
 
 The following steps use Docker and [Keycloak IdP](https://www.keycloak.org/) to set up a basic authentication backend:
 
-
 1. Download and unzip the [example OpenID Connect zip file]({{site.url}}{{site.baseurl}}/assets/examples/oidc_example.zip)
+   (TODO: add a reference to the source of this environment.)
 2. Update the `.env` file with a strong password for the `admin` user.
 3. Substitute the `{IP}` placeholders in `config.yml` and `opensearch_dashboards.yml` with the IP of the local machine.
+   (you have to use a real ip address and not a loopback address like `127.0.0.1`)
+   ```
+   MY_PRIMARY_IP=$(hostname -I | awk '{print $1}')
+   sed -i "~s,{\?{IP}}\?,${MY_PRIMARY_IP}," *.yml
+   ```
 4. Review the following files:
   - `docker-compose.yml` defines a single OpenSearch node, OpenSearch Dashboards, and Keycloak server.
   - `new-realm.json` specifies the details of the [realm](https://www.keycloak.org/docs/latest/server_admin/#core-concepts-and-terms). In this example, the realm is named `new`.
   - `config.yml` configures `basic_internal_auth_domain` and `oidc_auth_domain`.
   - `opensearch_dashboards.yml` should point to Keycloak for authentication. Make sure that the `opensearch_security.openid.connect_url` setting points to the URL of the realm.
 5. At the command line, run `docker compose up`.
-6. Access OpenSearch Dashboards at `http://localhost:5601` and log in with username `testuser` and password `testpassword` configured in the `new-realm.json` file. 
+6. Access OpenSearch Dashboards at `http://localhost:5601` and log in with username `testuser` and password `testpassword` configured in the `new-realm.json` file.
+
+Details about the environment:
 
-After logging in, the `testuser` receives the backend role `admin` from Keycloak, which is mapped to the `all_access` OpenSearch role. These backend roles can be managed using the Keycloak Administrative Console at http://localhost:8080, using username `admin` and password `admin`.
+* After logging in, the `testuser` receives the backend role `admin` from Keycloak, which is mapped to the `all_access` OpenSearch role.
+* Backend roles can be managed using the Keycloak Administrative Console at http://localhost:8080 
+  (using username `admin` and password `admin`.)
+* Create a