Deploys a single replica of your React.js application inside a pod. The pod uses the Docker image built and pushed by your GitHub Actions CI/CD workflow  
  (refer to [Automate your builds with GitHub Actions](configure-github-actions.md)).  
  The container listens on port `8080`, which is typically used by [Nginx](https://nginx.org/en/docs/) to serve your production React app.

- Service (NodePort) 
  Exposes the deployed pod to your local machine.  
  It forwards traffic from port `30001` on your host to port `8080` inside the container.  
  This lets you access the application in your browser at [http://localhost:30001](http://localhost:30001).

> [!NOTE]
> To learn more about Kubernetes objects, see the [Kubernetes documentation](https://kubernetes.io/docs/home/).

---

## Deploy and check your application

Follow these steps to deploy your containerized React.js app into a local Kubernetes cluster and verify that it’s running correctly.

### Step 1. Apply the Kubernetes configuration

In your terminal, navigate to the directory where your `reactjs-sample-kubernetes.yaml` file is located, then deploy the resources using:

```console
  $ kubectl apply -f reactjs-sample-kubernetes.yaml
```

If everything is configured properly, you’ll see confirmation that both the Deployment and the Service were created:

```shell
  deployment.apps/reactjs-sample created
  service/reactjs-sample-service created
```
   
This output means that both the Deployment and the Service were successfully created and are now running inside your local cluster.

### Step 2. Check the Deployment status

Run the following command to check the status of your deployment:
   
```console
  $ kubectl get deployments
```

You should see an output similar to:

```shell
  NAME                 READY   UP-TO-DATE   AVAILABLE   AGE
  reactjs-sample       1/1     1            1           14s
```

This confirms that your pod is up and running with one replica available.

### Step 3. Verify the Service exposure

Check if the NodePort service is exposing your app to your local machine:

```console
$ kubectl get services
```

You should see something like:

```shell
NAME                     TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)          AGE
reactjs-sample-service   NodePort    10.100.244.65    <none>        8080:30001/TCP   1m