Add Linux App Store Web Portal with Kubernetes deployment

- React-style static web portal with Tailwind CSS
- OS detection (Debian/Ubuntu, Fedora, Arch, Generic)
- Dynamic install commands (apt://, appstream://, flatpak)
- 9 pre-configured applications
- Kubernetes: 2 replicas, LoadBalancer service, Nginx ingress
- GitLab Container Registry (git.giaco.net/capitano/webapplinux)
- Namespace: linuxwebapp
- Added Dockerfile, nginx.conf, deploy.sh, docker-compose.yml
- Updated README.md with deployment instructions

k8s/deployment.yaml

@@ -0,0 +1,47 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: linux-app-store
+  namespace: linuxwebapp
+  labels:
+    app: linux-app-store
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: linux-app-store
+  template:
+    metadata:
+      labels:
+        app: linux-app-store
+    spec:
+      containers:
+      - name: linux-app-store
+        image: git.giaco.net/capitano/webapplinux:latest
+        imagePullPolicy: Always
+        ports:
+        - containerPort: 80
+        resources:
+          requests:
+            memory: "128Mi"
+            cpu: "100m"
+          limits:
+            memory: "256Mi"
+            cpu: "200m"
+        livenessProbe:
+          httpGet:
+            path: /
+            port: 80
+          initialDelaySeconds: 30
+          periodSeconds: 10
+        readinessProbe:
+          httpGet:
+            path: /
+            port: 80
+          initialDelaySeconds: 5
+          periodSeconds: 5
+        env:
+        - name: NGINX_HOST
+          value: "apps.local"
+        - name: NGINX_PORT
+          value: "80"