Add Dockerfile, docker-compose.yml and Gitea Actions workflow for CI/CD

.gitea/workflows/deploy.yml

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+name: CI/CD Deployment
+
+on:
+  push:
+    branches:
+      - master
+      - main
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Deploy via SSH
+        uses: appleboy/ssh-action@master
+        with:
+          host: ${{ secrets.DEBIAN_HOST }}
+          username: ${{ secrets.DEBIAN_USER }}
+          key: ${{ secrets.SSH_PRIVATE_KEY }}
+          port: 22
+          script: |
+            cd /opt/websitedummy
+            git pull origin master || git pull origin main
+            docker compose up -d --build

Dockerfile

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+# Build-Phase
+FROM node:20-alpine AS builder
+WORKDIR /app
+COPY package*.json ./
+RUN npm install --legacy-peer-deps
+COPY . .
+RUN npm run build
+
+# Production-Phase
+FROM nginx:alpine
+
+# Nginx konfigurieren für non-root Port 8080
+RUN sed -i 's/listen\( \)*80;/listen 8080;/g' /etc/nginx/conf.d/default.conf && \
+    touch /var/run/nginx.pid && \
+    chown -R nginx:nginx /var/run/nginx.pid /var/cache/nginx /var/log/nginx /etc/nginx/conf.d
+
+USER nginx
+COPY --from=builder /app/dist /usr/share/nginx/html
+EXPOSE 8080

docker-compose.yml

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+version: '3.8'
+
+services:
+  websitedummy:
+    build: .
+    image: websitedummy:latest
+    container_name: websitedummy
+    restart: always
+    read_only: true
+    tmpfs:
+      - /var/cache/nginx
+      - /var/run
+    ports:
+      - "127.0.0.1:8080:8080"
+    deploy:
+      resources:
+        limits:
+          cpus: '0.5'
+          memory: 256M