feat: the app

Dockerfile

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+# Use Node.js LTS version
+FROM node:20-slim
+
+# Install Chromium and dependencies for Puppeteer
+RUN apt-get update && apt-get install -y \
+    chromium \
+    chromium-sandbox \
+    fonts-liberation \
+    libappindicator3-1 \
+    libasound2 \
+    libatk-bridge2.0-0 \
+    libatk1.0-0 \
+    libcups2 \
+    libdbus-1-3 \
+    libdrm2 \
+    libgbm1 \
+    libgdk-pixbuf2.0-0 \
+    libglib2.0-0 \
+    libgtk-3-0 \
+    libnspr4 \
+    libnss3 \
+    libx11-xcb1 \
+    libxcomposite1 \
+    libxdamage1 \
+    libxfixes3 \
+    libxrandr2 \
+    xdg-utils \
+    && rm -rf /var/lib/apt/lists/*
+
+# Set working directory
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install dependencies
+RUN npm ci --only=production
+
+# Copy application files
+COPY . .
+
+# Create data directory for links storage
+RUN mkdir -p /app/data
+
+# Set environment variables
+ENV NODE_ENV=production
+ENV PORT=3000
+ENV CHROME_EXECUTABLE_PATH=/usr/bin/chromium
+
+# Expose port
+EXPOSE 3000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+  CMD node -e "require('http').get('http://localhost:3000/api/links', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"
+
+# Start the application
+CMD ["node", "server.js"]
+