refactor: Split monolithic container into separate API and frontend deployments

ARCHITECTURE CHANGES:
- API service: Node.js server on port 3001 (Dockerfile.api)
- Frontend service: Nginx serving React on port 80 (Dockerfile.frontend)
- Each service has its own deployment, service, and replicas
- Ingress routes / to frontend and /api/ to API

KUBERNETES MANIFESTS:
- api-deployment.yaml: 2 replicas of Node.js API server
- api-service.yaml: ClusterIP service for API
- frontend-deployment.yaml: 2 replicas of Nginx frontend
- frontend-service.yaml: ClusterIP service for frontend
- Updated ingress.yaml: Routes traffic based on paths
- Updated kustomization.yaml: References new deployments

DOCKER IMAGES:
- Dockerfile.api: Minimal Node.js image for API (~200MB)
- Dockerfile.frontend: Nginx + React build (~50MB)
- Separate builds in workflow for independent versioning

NGINX CONFIGURATION:
- Removed API proxy (separate service now)
- Simplified config for static file serving only

BENEFITS:
- Independent scaling (can scale frontend/API separately)
- Smaller images with minimal base images
- API errors don't affect frontend availability
- Easier to update one service without affecting the other

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

.gitea/workflows/build-deploy.yml

@@ -39,12 +39,18 @@ jobs:
       - name: Login to Container Registry
         run: echo "$REGISTRY_PASSWORD" | docker login "$REGISTRY_URL" -u "$REGISTRY_USER" --password-stdin
 
-      - name: Build and Push Docker image
+      - name: Build and Push API image
         run: |
-          docker build -t "$REGISTRY_URL/sortifal/pfee:$IMAGE_TAG" -t "$REGISTRY_URL/sortifal/pfee:latest" .
+          docker build -f Dockerfile.api -t "$REGISTRY_URL/sortifal/pfee:$IMAGE_TAG" -t "$REGISTRY_URL/sortifal/pfee:latest" .
           docker push "$REGISTRY_URL/sortifal/pfee:$IMAGE_TAG"
           docker push "$REGISTRY_URL/sortifal/pfee:latest"
 
+      - name: Build and Push Frontend image
+        run: |
+          docker build -f Dockerfile.frontend -t "$REGISTRY_URL/sortifal/pfee-frontend:$IMAGE_TAG" -t "$REGISTRY_URL/sortifal/pfee-frontend:latest" .
+          docker push "$REGISTRY_URL/sortifal/pfee-frontend:$IMAGE_TAG"
+          docker push "$REGISTRY_URL/sortifal/pfee-frontend:latest"
+
   deploy:
     name: Deploy to Kubernetes
     runs-on: ubuntu-latest
@@ -84,9 +90,11 @@ jobs:
         run: |
           cd k8s
           kustomize edit set image gitea.vidoks.fr/sortifal/pfee="$REGISTRY_URL/sortifal/pfee:$IMAGE_TAG"
+          kustomize edit set image gitea.vidoks.fr/sortifal/pfee-frontend="$REGISTRY_URL/sortifal/pfee-frontend:$IMAGE_TAG"
           kubectl apply -k .
 
       - name: Verify deployment
         run: |
-          kubectl rollout status deployment/sqdc-dashboard -n sqdc-dashboard --timeout=5m
+          kubectl rollout status deployment/sqdc-api -n sqdc-dashboard --timeout=5m
+          kubectl rollout status deployment/sqdc-frontend -n sqdc-dashboard --timeout=5m
           kubectl get pods,svc,ingress -n sqdc-dashboard

dashboard-sqdc/Dockerfile.api

@@ -0,0 +1,24 @@
+# API Server Dockerfile
+FROM node:18-alpine
+
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install only production dependencies
+RUN npm ci --only=production
+
+# Copy database and server files
+COPY database ./database
+COPY server.js .
+
+# Expose API port
+EXPOSE 3001
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+  CMD node -e "require('http').get('http://localhost:3001/api/categories', (r) => {if (r.statusCode !== 200) throw new Error(r.statusCode)})"
+
+# Start the API server
+CMD ["node", "server.js"]

dashboard-sqdc/Dockerfile.frontend

@@ -0,0 +1,35 @@
+# Multi-stage build for React frontend with Nginx
+FROM node:18-alpine AS builder
+
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install all dependencies (including dev) needed for build
+RUN npm ci
+
+# Copy source code
+COPY . .
+
+# Build the application
+RUN npm run build
+
+# Stage 2: Production image with Nginx
+FROM nginx:alpine
+
+# Copy custom nginx configuration
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+# Copy built application from builder stage
+COPY --from=builder /app/build /usr/share/nginx/html
+
+# Expose port
+EXPOSE 80
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+  CMD wget --no-verbose --tries=1 --spider http://localhost/ || exit 1
+
+# Start nginx
+CMD ["nginx", "-g", "daemon off;"]

dashboard-sqdc/k8s/api-deployment.yaml

@@ -1,30 +1,25 @@
 apiVersion: apps/v1
 kind: Deployment
 metadata:
-  name: sqdc-dashboard
+  name: sqdc-api
   namespace: sqdc-dashboard
   labels:
-    app: sqdc-dashboard
+    app: sqdc-api
 spec:
   replicas: 2
   selector:
     matchLabels:
-      app: sqdc-dashboard
+      app: sqdc-api
   template:
     metadata:
       labels:
-        app: sqdc-dashboard
+        app: sqdc-api
     spec:
-      imagePullSecrets:
-      - name: registry-credentials
       containers:
-      - name: dashboard
+      - name: api
         image: gitea.vidoks.fr/sortifal/pfee:latest
         imagePullPolicy: Always
         ports:
-        - containerPort: 80
-          name: http
-          protocol: TCP
         - containerPort: 3001
           name: api
           protocol: TCP
@@ -33,23 +28,23 @@ spec:
           value: "production"
         resources:
           requests:
+            memory: "128Mi"
+            cpu: "100m"
+          limits:
             memory: "256Mi"
             cpu: "250m"
-          limits:
-            memory: "512Mi"
-            cpu: "500m"
         livenessProbe:
           httpGet:
-            path: /
-            port: 80
+            path: /api/categories
+            port: 3001
           initialDelaySeconds: 30
           periodSeconds: 10
           timeoutSeconds: 5
           failureThreshold: 3
         readinessProbe:
           httpGet:
-            path: /
-            port: 80
+            path: /api/categories
+            port: 3001
           initialDelaySeconds: 10
           periodSeconds: 5
           timeoutSeconds: 3

dashboard-sqdc/k8s/api-service.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: sqdc-api
+  namespace: sqdc-dashboard
+  labels:
+    app: sqdc-api
+spec:
+  type: ClusterIP
+  ports:
+  - port: 3001
+    targetPort: 3001
+    protocol: TCP
+    name: api
+  selector:
+    app: sqdc-api

dashboard-sqdc/k8s/frontend-deployment.yaml

@@ -0,0 +1,48 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: sqdc-frontend
+  namespace: sqdc-dashboard
+  labels:
+    app: sqdc-frontend
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: sqdc-frontend
+  template:
+    metadata:
+      labels:
+        app: sqdc-frontend
+    spec:
+      containers:
+      - name: frontend
+        image: gitea.vidoks.fr/sortifal/pfee-frontend:latest
+        imagePullPolicy: Always
+        ports:
+        - containerPort: 80
+          name: http
+          protocol: TCP
+        resources:
+          requests:
+            memory: "64Mi"
+            cpu: "50m"
+          limits:
+            memory: "128Mi"
+            cpu: "100m"
+        livenessProbe:
+          httpGet:
+            path: /
+            port: 80
+          initialDelaySeconds: 30
+          periodSeconds: 10
+          timeoutSeconds: 5
+          failureThreshold: 3
+        readinessProbe:
+          httpGet:
+            path: /
+            port: 80
+          initialDelaySeconds: 10
+          periodSeconds: 5
+          timeoutSeconds: 3
+          failureThreshold: 2

dashboard-sqdc/k8s/frontend-service.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: sqdc-frontend
+  namespace: sqdc-dashboard
+  labels:
+    app: sqdc-frontend
+spec:
+  type: ClusterIP
+  ports:
+  - port: 80
+    targetPort: 80
+    protocol: TCP
+    name: http
+  selector:
+    app: sqdc-frontend

dashboard-sqdc/k8s/ingress.yaml

@@ -4,7 +4,6 @@ metadata:
   name: sqdc-dashboard-ingress
   namespace: sqdc-dashboard
   annotations:
-    nginx.ingress.kubernetes.io/rewrite-target: /
     nginx.ingress.kubernetes.io/ssl-redirect: "false"
 spec:
   ingressClassName: nginx
@@ -16,6 +15,13 @@ spec:
         pathType: Prefix
         backend:
           service:
-            name: sqdc-dashboard-service
+            name: sqdc-frontend
             port:
               number: 80
+      - path: /api/
+        pathType: Prefix
+        backend:
+          service:
+            name: sqdc-api
+            port:
+              number: 3001

dashboard-sqdc/k8s/kustomization.yaml

@@ -5,18 +5,21 @@ namespace: sqdc-dashboard
 
 resources:
   - namespace.yaml
-  - deployment.yaml
-  - service.yaml
+  - api-deployment.yaml
+  - api-service.yaml
+  - frontend-deployment.yaml
+  - frontend-service.yaml
   - ingress.yaml
   - configmap.yaml
-  # Note: PVC removed - using emptyDir for temporary storage
 
 commonLabels:
-  app: sqdc-dashboard
   managed-by: kustomize
 
-# Image tag will be set via kustomize edit or --kustomize-replace during deployment
+# Image tags will be set via kustomize edit during deployment
 images:
   - name: gitea.vidoks.fr/sortifal/pfee
     newTag: latest
     newName: gitea.vidoks.fr/sortifal/pfee
+  - name: gitea.vidoks.fr/sortifal/pfee-frontend
+    newTag: latest
+    newName: gitea.vidoks.fr/sortifal/pfee-frontend

dashboard-sqdc/k8s/service.yaml

@@ -1,20 +0,0 @@
-apiVersion: v1
-kind: Service
-metadata:
-  name: sqdc-dashboard-service
-  namespace: sqdc-dashboard
-  labels:
-    app: sqdc-dashboard
-spec:
-  type: ClusterIP
-  selector:
-    app: sqdc-dashboard
-  ports:
-  - name: http
-    port: 80
-    targetPort: 80
-    protocol: TCP
-  - name: api
-    port: 3001
-    targetPort: 3001
-    protocol: TCP

dashboard-sqdc/nginx.conf

@@ -10,19 +10,6 @@ server {
     gzip_min_length 1024;
     gzip_types text/plain text/css text/xml text/javascript application/x-javascript application/xml+rss application/json;
 
-    # API proxy
-    location /api/ {
-        proxy_pass http://127.0.0.1:3001/;
-        proxy_http_version 1.1;
-        proxy_set_header Upgrade $http_upgrade;
-        proxy_set_header Connection 'upgrade';
-        proxy_set_header Host $host;
-        proxy_cache_bypass $http_upgrade;
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header X-Forwarded-Proto $scheme;
-    }
-
     # Static assets with caching
     location /static/ {
         expires 1y;