refactor(k8s): 🔧 Replace Pod with Deployment for runner instances

Changes the runner infrastructure from single Pods to Deployments for improved reliability and management:

- Adds restart policy configuration
- Improves container and volume naming conventions
- Maintains single replica to ensure one runner instance
- Sets up proper label selectors for deployment management

provider/provider.go

@@ -29,11 +29,13 @@ import (
 	"edp.buildth.ing/DevFW-CICD/garm-provider-edge-connect/config"
 	"edp.buildth.ing/DevFW-CICD/garm-provider-edge-connect/internal/spec"
 
+	appsv1 "k8s.io/api/apps/v1"
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	execution "github.com/cloudbase/garm-provider-common/execution/v0.1.0"
 	"github.com/cloudbase/garm-provider-common/params"
+	"k8s.io/utils/ptr"
 )
 
 var Version = "v0.0.0-unknown"
@@ -90,42 +92,54 @@ func (a *edgeConnectProvider) CreateInstance(ctx context.Context, bootstrapParam
 
 	envs := spec.GetRunnerEnvs(gitHubScopeDetails, bootstrapParams)
 
-	podv1 := corev1.Pod{
+	deployment := appsv1.Deployment{
 		TypeMeta: metav1.TypeMeta{
-			Kind:       "Pod",
+			Kind:       "Deployment",
-			APIVersion: "v1",
+			APIVersion: "apps/v1",
 		},
 		ObjectMeta: metav1.ObjectMeta{
 			Name:   instancename,
-			Labels: map[string]string{"run": instancename},
+			Labels: map[string]string{"app": instancename},
 		},
-		Spec: corev1.PodSpec{
+		Spec: appsv1.DeploymentSpec{
-			Containers: []corev1.Container{
+			Replicas: ptr.To(int32(1)),
-				corev1.Container{
+			Selector: &metav1.LabelSelector{
-					Name:            "mganter-test",
+				MatchLabels: map[string]string{"app": instancename},
-					Image:           "edp.buildth.ing/devfw-cicd/garm-act-runner:1",
+			},
-					ImagePullPolicy: "Always",
+			Template: corev1.PodTemplateSpec{
-					Env:             envs,
+				ObjectMeta: metav1.ObjectMeta{
-					VolumeMounts: []corev1.VolumeMount{
+					Labels: map[string]string{"app": instancename},
-						corev1.VolumeMount{
+				},
-							MountPath: "/runner",
+				Spec: corev1.PodSpec{
-							Name:      "cache-volume",
+					RestartPolicy: corev1.RestartPolicyNever,
+					Containers: []corev1.Container{
+						{
+							Name:            "runner",
+							Image:           "edp.buildth.ing/devfw-cicd/garm-act-runner:1",
+							ImagePullPolicy: "Always",
+							Env:             envs,
+							VolumeMounts: []corev1.VolumeMount{
+								{
+									Name:      "runner-dir",
+									MountPath: "/runner",
+								},
+							},
 						},
 					},
-				},
+					Volumes: []corev1.Volume{
-			},
+						{
-			Volumes: []corev1.Volume{
+							Name: "runner-dir",
-				corev1.Volume{
+							VolumeSource: corev1.VolumeSource{
-					Name: "cache-volume",
+								EmptyDir: &corev1.EmptyDirVolumeSource{},
-					VolumeSource: corev1.VolumeSource{
+							},
-						EmptyDir: &corev1.EmptyDirVolumeSource{},
+						},
 					},
 				},
 			},
 		},
 	}
 
-	podjson, err := json.Marshal(podv1)
+	manifest, err := json.Marshal(deployment)
 	if err != nil {
 		return params.ProviderInstance{}, err
 	}
@@ -156,7 +170,7 @@ func (a *edgeConnectProvider) CreateInstance(ctx context.Context, bootstrapParam
 					Name: "EU.small",
 				},
 				DeploymentGenerator: "kubernetes-basic",
-				DeploymentManifest:  string(podjson),
+				DeploymentManifest:  string(manifest),
 				RequiredOutboundConnections: []edgeconnect.SecurityRule{
 					edgeconnect.SecurityRule{
 						PortRangeMax: 65535,