feature: incorporate nginx-agent.conf 3.0 changes to Get started guide (#685)

Convert the Agent conf 3.0 changes to an include and use it where relevant

Author: mjang

content/includes/nginx-one/conf/nginx-agent-conf.md

@@ -0,0 +1,22 @@
+---
+docs: DOCS-000
+files:
+  - content/nginx-one/getting-started.md
+  - content/nginx-one/agent/containers/run-agent-container.md
+---
+
+```yaml
+command:
+  server:
+    host: "<NGINX-One-Console-URL>" # Command server host
+    port: 443                       # Command server port
+  auth:
+    token: "<your-data-plane-key-here>" # Authentication token for the command server
+  tls:
+    skip_verify: false
+```
+
+Replace the placeholder values:
+
+- `<NGINX-One-Console-URL>`: The URL of your NGINX One Console instance, typically https://INSERT_YOUR_TENANT_NAME.console.ves.volterra.io/ .
+- `<your-data-plane-key-here>`: Your Data Plane key.

content/nginx-one/agent/containers/run-agent-container.md

@@ -45,21 +45,8 @@ Ensure you are using the correct image version. Replace `latest` with the desire
 Create a configuration file named `nginx-agent.conf` in your current directory
 and populate the file with the following structure:
 
-```yaml
-command:
-  server:
-    host: "<NGINX-One-Console-URL>" # Command server host
-    port: 443                       # Command server port
-  auth:
-    token: "<your-data-plane-key-here>" # Authentication token for the command server
-  tls:
-    skip_verify: false
-```
-
-Replace the placeholder values:
 
-- `<NGINX-One-Console-URL>`: The URL of your NGINX One Console instance.
-- `<your-data-plane-key-here>`: Your Data Plane access token.
+{{< include "/nginx-one/conf/nginx-agent-conf.md" >}}
 
 
 ## Run the container

content/nginx-one/getting-started.md

@@ -93,9 +93,9 @@ To install NGINX Agent on an NGINX instance:
    - Replace `YOUR_DATA_PLANE_KEY` with your actual data plane key.
    - The `-y` option automatically confirms any prompts during installation.
 
-The `install` script writes an `nginx-agent.conf` file to the `/etc/nginx-agent/` directory, with the [data plane key](#generate-data-plane-key) that you generated. You can find the key, host address, TLS status, and other information in the `nginx-agent.conf` file.
+The `install` script writes an `nginx-agent.conf` file to the `/etc/nginx-agent/` directory, with the [data plane key](#generate-data-plane-key) that you generated. You can find this information in the `nginx-agent.conf` file:
 
-If you followed the [Installation and upgrade](https://docs.nginx.com/nginx-agent/installation-upgrade/) guides for installing NGINX Agent, you may need to add this information manually to `nginx-agent.conf`.
+{{< include "/nginx-one/conf/nginx-agent-conf.md" >}}
 
 <span style="display: inline-block; margin-top: 20px;" >
 
@@ -138,7 +138,7 @@ The NGINX One Console dashboard relies on APIs for NGINX Plus and NGINX Open Sou
 
 {{< include "/use-cases/monitoring/enable-nginx-oss-stub-status.md" >}}
 
----
+--- 
 
 ## View instance metrics with the NGINX One dashboard