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Dockerfile

@@ -1,4 +1,71 @@
-FROM node:lts AS builder
+# Multi-stage build optimized for maximum build speed
+# This version uses a Chrome-enabled base for fastest rebuilds
+
+# Stage 1: Chrome base (cached once, reused forever)
+FROM node:18-slim AS chrome-base
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    wget gnupg ca-certificates \
+    && wget -q -O - https://dl.google.com/linux/linux_signing_key.pub | gpg --dearmor -o /usr/share/keyrings/googlechrome-linux-keyring.gpg \
+    && echo "deb [arch=amd64 signed-by=/usr/share/keyrings/googlechrome-linux-keyring.gpg] http://dl.google.com/linux/chrome/deb/ stable main" > /etc/apt/sources.list.d/google-chrome.list \
+    && apt-get update && apt-get install -y --no-install-recommends \
+    google-chrome-stable \
+    fonts-liberation libasound2 libatk-bridge2.0-0 libatk1.0-0 \
+    libcairo2 libcups2 libdbus-1-3 libdrm2 libgtk-3-0 libnspr4 \
+    libnss3 libxcomposite1 libxdamage1 libxfixes3 libxrandr2 \
+    libxss1 libxtst6 lsb-release xdg-utils \
+    && rm -rf /var/lib/apt/lists/* && apt-get clean
+
+# Stage 2: Dependencies (cached when package.json unchanged)
+FROM chrome-base AS deps
+WORKDIR /app
+RUN npm i -g pnpm
+COPY package.json pnpm-lock.yaml ./
+RUN pnpm install --frozen-lockfile
+
+# Stage 3: Builder (only rebuilds when source changes)
+FROM deps AS builder
+COPY . .
+RUN pnpm run build
+
+# Stage 4: Production dependencies (cached separately)
+FROM chrome-base AS prod-deps
+WORKDIR /app
+RUN npm i -g pnpm
+COPY package.json pnpm-lock.yaml ./
+RUN pnpm install --prod --frozen-lockfile && pnpm store prune
+
+# Stage 5: Runtime (fastest layer, only copies artifacts)
+FROM chrome-base AS runtime
+WORKDIR /app
+
+# Create user (cached)
+RUN groupadd -r pptruser && useradd -r -g pptruser -G audio,video pptruser \
+    && mkdir -p /home/pptruser/Downloads \
+    && chown -R pptruser:pptruser /home/pptruser
+
+# Copy artifacts (only changes when build changes)
+COPY --from=builder /app/dist ./dist
+COPY --from=prod-deps /app/node_modules ./node_modules
+COPY --from=prod-deps /app/package.json ./package.json
+
+# Set ownership and environment
+RUN chown -R pptruser:pptruser /app
+ENV HOST=0.0.0.0 \
+    PORT=4321 \
+    PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true \
+    PUPPETEER_EXECUTABLE_PATH=/usr/bin/google-chrome-stable \
+    NODE_ENV=production
+
+USER pptruser
+EXPOSE 4321
+
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+    CMD node -e "const http = require('http'); const options = { host: 'localhost', port: 4321, timeout: 2000 }; const req = http.request(options, (res) => { process.exit(res.statusCode === 200 ? 0 : 1); }); req.on('error', () => process.exit(1)); req.end();"
+
+CMD ["node", "./dist/server/entry.mjs"]
+
+FROM node:18-slim AS builder
+
 WORKDIR /app
 
 # Install pnpm