chore: update readme with sonarcloud badges and usage section

Author: andrea-acampora

Diff for: README.md

@@ -1,15 +1,30 @@
 # Digital Twins Event Gateway
 
 ![workflow status](https://github.com/smartoperatingblock/dt-event-gateway/actions/workflows/build-and-deploy.yml/badge.svg)
-[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg?style=plastic)](https://opensource.org/licenses/MIT)
+![Version](https://img.shields.io/github/v/release/smartoperatingblock/dt-event-gateway?style=plastic)
+
+[![Bugs](https://sonarcloud.io/api/project_badges/measure?project=SmartOperatingBlock_dt-event-gateway&metric=bugs)](https://sonarcloud.io/summary/new_code?id=SmartOperatingBlock_dt-event-gateway)
+[![Vulnerabilities](https://sonarcloud.io/api/project_badges/measure?project=SmartOperatingBlock_dt-event-gateway&metric=vulnerabilities)](https://sonarcloud.io/summary/new_code?id=SmartOperatingBlock_dt-event-gateway)
+[![Code Smells](https://sonarcloud.io/api/project_badges/measure?project=SmartOperatingBlock_dt-event-gateway&metric=code_smells)](https://sonarcloud.io/summary/new_code?id=SmartOperatingBlock_dt-event-gateway)
+[![Duplicated Lines (%)](https://sonarcloud.io/api/project_badges/measure?project=SmartOperatingBlock_dt-event-gateway&metric=duplicated_lines_density)](https://sonarcloud.io/summary/new_code?id=SmartOperatingBlock_dt-event-gateway)
 
 The Event Gateway between Digital Twins and Microservices.
 
-It's responsible to consume events from **Azure Digital Twins** through **Azure SignalR** service and to propagate them to application microservices through the **Kafka Event Broker**.
+It's responsible to consume events from **Azure Digital Twins** through **Azure SignalR** service and to propagate them to application microservices through a **Kafka Event Broker**.
+
+## Usage
+1. Provide a `.env` file with the following variables:
+   - BOOTSTRAP_SERVER_URL
+   - SCHEMA_REGISTRY_URL
+   - SIGNALR_CONNECTION_STRING
+2. Run the container with the following command:\
+    `docker run ghcr.io/smartoperatingblock/dt-event-gateway:1.2.1`
+
 
 ## Documentation
-- Checkout the latest events AsyncAPI documentation [here](https://smartoperatingblock.github.io/dt-event-gateway/documentation/asyncapi-doc)
-- Checkout the latest project documentation [here](https://smartoperatingblock.github.io/dt-event-gateway/documentation/code-doc)
+- Check out the *AsyncAPI* documentation [here](https://smartoperatingblock.github.io/dt-event-gateway/documentation/asyncapi-doc)
+- Check out the latest code documentation [here](https://smartoperatingblock.github.io/dt-event-gateway/documentation/code-doc)
 
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