chore: Refactor Kubernetes configuration to use Traefik for dashboard routing

kubernetes/gateway/values.yaml

@@ -0,0 +1,12 @@
+## File values.yaml ##
+providers:
+  # Disable the Ingress provider (optional)
+  # We do not want to use Ingress objects anymore!
+  kubernetesIngress:
+    enabled: false
+  # Enable the GatewayAPI provider
+  kubernetesGateway:
+    enabled: true
+# Allow the Gateway to expose HTTPRoute from all namespaces
+gateway:
+  namespacePolicy: All

kubernetes/gateway/whoami.yaml

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+# Application to expose
+kind: Deployment
+apiVersion: apps/v1
+metadata:
+  name: whoami
+  namespace: whoami
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app: whoami
+  template:
+    metadata:
+      labels:
+        app: whoami
+  spec:
+    containers:
+    - name: whoami
+      image: traefik/whoami
+---
+# Service to reach the application on the cluster
+apiVersion: v1
+kind: Service
+metadata:
+  name: whoami
+  namespace: whoami
+  labels:
+    app: whoami
+spec:
+  type: ClusterIP
+  ports:
+  - port: 80
+    name: whoami
+  selector:
+    app: whoami
+---
+# HTTPRoute
+apiVersion: gateway.networking.k8s.io/v1
+kind: HTTPRoute
+metadata:
+  name: whoami-httproute
+  namespace: whoami
+spec:
+  parentRefs:
+  - name: traefik-gateway
+    namespace: traefik
+  hostnames:
+  - node03.local
+  rules:
+  - matches:
+    - path:
+        type: PathPrefix
+        value: /
+  backendRefs:
+  - name: whoami
+    namespace: whoami
+    port: 80
+#   filters:
+#   # Core filter which adds a header
+#   - type: RequestHeaderModifier
+#     requestHeaderModifier:
+#       add:
+#         - name: x-post-topic
+#           value: GatewayAPI
+# # ExtensionRef filter to use the Traefik Middleware AddPrefix
+#   - type: ExtensionRef
+#     extensionRef:
+#       group: traefik.io
+#       kind: Middleware
+#       name: addprefix
+# ---
+# # Traefik Middleware AddPrefix
+# apiVersion: traefik.io/v1alpha1
+# kind: Middleware
+# metadata:
+#   name: addprefix
+#   namespace: whoami
+# spec:
+#   addPrefix:
+#     prefix: /gatewayapi