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Dockerfile

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+FROM node:20-bookworm-slim
+
+# Chromium + fonts for Puppeteer (PDF-Export) and nice handwriting fonts in the export
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    chromium \
+    fonts-liberation \
+    fonts-noto-color-emoji \
+    ca-certificates \
+    wget \
+    && rm -rf /var/lib/apt/lists/*
+
+ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true \
+    PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium \
+    NODE_ENV=production
+
+WORKDIR /app
+
+COPY backend/package.json ./
+RUN npm install --omit=dev
+
+COPY backend/ .
+
+RUN mkdir -p /data/friends
+VOLUME ["/data"]
+
+EXPOSE 3000
+
+CMD ["node", "server.js"]