docs(infra): update README.md (#281)

infrastructure/nomad/README.md

@@ -50,6 +50,9 @@ Add your private key to the SSH agent:
 ssh-add /path/to/your/private_key
 ```
 
+Prepare `ansible.cfg` File: This file contains the configuration settings for Ansible and is also used to specify the location of the inventory file.
+There is a sample `ansible.cfg.example` file located in this directory. Copy this file if you're happy with the default settings or create your own.
+
 Prepare `hosts.ini` File: This file contains the IP addresses of your Nomad servers and clients. Replace the sample IP addresses with the actual IP addresses of your machines.
 ```ini
 [nomad_servers]
@@ -93,10 +96,25 @@ Test the connection to the target machines:
 ansible all --inventory path/to/your/hosts.ini --module-name ping
 ```
 
+> The `ansible.cfg.example` refers to the `hosts.ini` file in the same directory.
+> If you have a different location for your inventory file, update the `inventory` setting in your `ansible.cfg` file.
+
 ## Cluster Management
 
 To manage the Nomad cluster, use the `cluster.sh` script. This script allows you to initialize, deploy, and destroy the Nomad cluster.
 For detailed usage instructions on how to use the script, run the following command:
 ```shell
 ./cluster.sh --help
 ```
+
+Example of destroying running Nomad cluster:
+```shell
+./cluster.sh destroy
+```
+
+Example of deploying Nomad cluster:
+```shell
+./cluster.sh deploy --no-logs-collection --datadog-key <DATADOG_API_KEY>` --l1-rpc-url <L1_RPC_URL>
+```
+
+> After successful deployment, you can find all secrets at: http://<TARGET_MACHINE_IP>:1111/secrets.json