build 1

backend/Dockerfile

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+# ── Build stage ──────────────────────────────────────────────────────────────
+FROM node:20-slim AS builder
+
+RUN apt-get update && apt-get install -y \
+    python3 make g++ \
+    --no-install-recommends \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+COPY package*.json tsconfig.json ./
+RUN npm ci
+
+COPY src ./src
+RUN npm run build && npm prune --production
+
+# ── Runtime stage ─────────────────────────────────────────────────────────────
+FROM node:20-slim
+
+# Install Chromium and runtime dependencies
+RUN apt-get update && apt-get install -y \
+    chromium \
+    fonts-freefont-ttf \
+    --no-install-recommends \
+    && rm -rf /var/lib/apt/lists/*
+
+ENV PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium
+ENV NODE_ENV=production
+
+WORKDIR /app
+
+COPY --from=builder /app/dist ./dist
+COPY --from=builder /app/node_modules ./node_modules
+COPY package.json ./
+
+EXPOSE 3001
+CMD ["node", "dist/index.js"]