Update Docker configuration and add Gitea CI/CD workflows

- Change Docker image in docker-compose.prod.yml to use 'portfolio-app:latest'.
- Add new scripts for Gitea deployment and setup of Gitea runner.
- Introduce CI/CD workflows for automated testing, security scanning, and deployment in Gitea.
- Enhance package.json with new deployment scripts for Gitea integration.

.gitea/workflows/quick-deploy.yml

@@ -0,0 +1,54 @@
+name: Quick Deploy
+
+on:
+  push:
+    branches: [ main ]
+  workflow_dispatch:
+
+env:
+  NODE_VERSION: '20'
+  DOCKER_IMAGE: portfolio-app
+  CONTAINER_NAME: portfolio-app
+
+jobs:
+  quick-deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build application
+        run: npm run build
+
+      - name: Build Docker image
+        run: |
+          docker build -t ${{ env.DOCKER_IMAGE }}:latest .
+
+      - name: Stop existing container
+        run: |
+          docker stop ${{ env.CONTAINER_NAME }} || true
+          docker rm ${{ env.CONTAINER_NAME }} || true
+
+      - name: Start new container
+        run: |
+          docker run -d \
+            --name ${{ env.CONTAINER_NAME }} \
+            --restart unless-stopped \
+            -p 3000:3000 \
+            -e NODE_ENV=production \
+            ${{ env.DOCKER_IMAGE }}:latest
+
+      - name: Health check
+        run: |
+          sleep 10
+          curl -f http://localhost:3000/api/health
+          echo "✅ Quick deployment successful!"