Azure templates | Add a specific image version deployment guide

azure/templates/README.MD

@@ -14,3 +14,56 @@ To deploy the ARM templates manually without using the Azure Marketplace, follow
       https://raw.githubusercontent.com/CheckPointSW/CloudGuardIaaS/master/azure/templates/
       ```
 7. Click *Purchase* to deploy the solution
+
+# How to deploy a specific version of Azure image
+<details>
+Please note that we recommend using the latest image.
+
+To deploy a specific Azure image, adjust the image version during the manual deployment of ARM templates and follow these instructions:
+
+1. Determine the desired image version - 
+   - Visit  [sk132192 - CloudGuard Network Security for Azure - Latest Updates](https://support.checkpoint.com/results/sk/sk132192#:~:text=CloudGuard%20for%20Azure%20Gateway%20Images%20history) >
+   Images History sections.
+   - Find the version of the desired image and change it as follows:
+   	  
+	  **Examples:**
+	  
+	  The version on the SK - **R81.10-335.1498**  
+	  Converted for the Azure template -  **8110.900335.1498**
+	
+	  The version on the SK - **R81-335.883**  
+      Converted for the Azure template -  **8100.900335.0883**
+
+2. In the "mainTemplate.json" file, change the value of the **“version”** parameter from “latest” to the version you want to deploy. This must be done under the version type of image you want to deploy (sg-byol, sg-ngtp, etc.)
+	
+	**Example** for SG-BYOL (Bring your own license):  
+	**Change from:**
+	
+	"imageReferenceBYOL":{  
+	"offer": "[variables('imageOffer')]",  
+	"publisher": "[variables('imagePublisher')]",  
+	"sku": "sg-byol",  
+	"version": "**latest**" },
+	
+	**to:**  
+	"imageReferenceBYOL":{  
+	"offer": "[variables('imageOffer')]",  
+	"publisher": "[variables('imagePublisher')]",  
+	"sku": "sg-byol",  
+    "version": "**8110.900335.1498**" },  
+
+
+3. To confirm the version, run the command on the deployed machine:  
+  **'more /etc/cloud-version'**
+
+   **Output for -  R81.20-631.1475:**  
+    release: R81.20  
+	take: 631  
+	build: 991001475  
+	platform: azure  
+	license: byol  
+	deployment_method: ftw  
+	template_name: management  
+	template_version: 20231002  
+	template_type: marketplace  
+</details>