Create complete Dashboard application with Docker, Synology, and Unifi monitoring

Co-authored-by: mblanke <9078342+mblanke@users.noreply.github.com>

Dockerfile

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+FROM node:20-alpine AS frontend-build
+
+WORKDIR /app/frontend
+COPY frontend/package*.json ./
+RUN npm ci
+COPY frontend/ ./
+RUN npm run build
+
+FROM node:20-alpine
+
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm ci --production
+
+COPY server.js ./
+COPY --from=frontend-build /app/frontend/dist ./frontend/dist
+
+EXPOSE 3000 3001
+
+CMD ["node", "server.js"]