fix(k8s): enhance Kubernetes deployment (#3928)

Co-authored-by: Pepe Fagoaga <pepe@prowler.com>

docs/index.md

@@ -323,16 +323,17 @@ For non in-cluster execution, you can provide the location of the KubeConfig fil
 prowler kubernetes --kubeconfig-file path
 ```
 
-For in-cluster execution, you can use the supplied yaml to run Prowler as a job:
+For in-cluster execution, you can use the supplied yaml to run Prowler as a job within a new Prowler namespace:
 ```console
 kubectl apply -f kubernetes/job.yaml
 kubectl apply -f kubernetes/prowler-role.yaml
 kubectl apply -f kubernetes/prowler-rolebinding.yaml
-kubectl get pods --> prowler-XXXXX
+kubectl get pods --namespace prowler-ns --> prowler-XXXXX
-kubectl logs prowler-XXXXX
+kubectl logs prowler-XXXXX --namespace prowler-ns
 ```
 
-> By default, `prowler` will scan all namespaces in your active Kubernetes context, use flag `--context` to specify the context to be scanned and `--namespaces` to specify the namespaces to be scanned.
+???+ note
+    By default, `prowler` will scan all namespaces in your active Kubernetes context. Use the flag `--context` to specify the context to be scanned and `--namespaces` to specify the namespaces to be scanned.
 
 ## Prowler v2 Documentation
 For **Prowler v2 Documentation**, please check it out [here](https://github.com/prowler-cloud/prowler/blob/8818f47333a0c1c1a457453c87af0ea5b89a385f/README.md).

kubernetes/job.yaml

@@ -1,13 +1,28 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: prowler-ns
+
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: prowler-sa
+  namespace: prowler-ns
+
+---
 apiVersion: batch/v1
 kind: Job
 metadata:
   name: prowler
+  namespace: prowler-ns
 spec:
   template:
     metadata:
       labels:
         app: prowler
     spec:
+      serviceAccountName: prowler-sa
       containers:
       - name: prowler
         image: toniblyx/prowler:stable

kubernetes/prowler-rolebinding.yaml

@@ -1,12 +1,12 @@
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRoleBinding
 metadata:
-  name: prowler-read-cluster-default-sa
+  name: prowler-read-cluster-binding
 roleRef:
   apiGroup: rbac.authorization.k8s.io
   kind: ClusterRole
   name: prowler-read-cluster
 subjects:
 - kind: ServiceAccount
-  name: default
+  name: prowler-sa
-  namespace: default
+  namespace: prowler-ns