fix: ARM Chromium support, Dockerfile improvements, ESM build fix

Dockerfile

@@ -1,19 +1,19 @@
-FROM node:22-slim
+FROM node:22-bookworm-slim
 
-# Chrome deps
+# Install Chromium (works on ARM and x86)
 RUN apt-get update && apt-get install -y --no-install-recommends \
-  libatk1.0-0t64 libatk-bridge2.0-0t64 libcups2t64 libdrm2 \
-  libxkbcommon0 libxcomposite1 libxdamage1 libxfixes3 libxrandr2 \
-  libgbm1 libpango-1.0-0 libpangocairo-1.0-0 libcairo2 \
-  libasound2t64 libnspr4 libnss3 fonts-liberation \
+  chromium fonts-liberation \
   && rm -rf /var/lib/apt/lists/*
 
+ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true
+ENV PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium
+
 WORKDIR /app
 COPY package*.json ./
 RUN npm ci --omit=dev
 COPY dist/ dist/
+COPY public/ public/
 
 ENV PORT=3100
 EXPOSE 3100
-USER node
 CMD ["node", "dist/index.js"]