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Dockerfile

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+FROM node:18-alpine
+
+# Install dependencies for Puppeteer
+RUN apk add --no-cache \
+    chromium \
+    nss \
+    freetype \
+    harfbuzz \
+    ca-certificates \
+    ttf-freefont
+
+# Tell Puppeteer to skip installing Chrome. We'll use the installed package.
+ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true \
+    PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium-browser
+
+# Create app directory
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install dependencies
+RUN npm ci --only=production
+
+# Copy application files
+COPY . .
+
+# Create output directory for screenshots
+RUN mkdir -p /var/www/html/images && \
+    chown -R node:node /var/www/html/images
+
+# Use non-root user
+USER node
+
+# Expose port
+EXPOSE 5955
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+  CMD node -e "require('http').get('http://localhost:5955/health', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"
+
+# Start application
+CMD ["node", "server.js"]