Dockerfile

# Use Node.js with Debian Slim — needed for Puppeteer/Chrome dependencies
FROM node:20-slim

# Install Chromium and dependencies for Puppeteer
RUN apt-get update && apt-get install -y \
    chromium \
    fonts-liberation \
    libappindicator3-1 \
    libasound2 \
    libatk-bridge2.0-0 \
    libatk1.0-0 \
    libcups2 \
    libdbus-1-3 \
    libgdk-pixbuf2.0-0 \
    libnspr4 \
    libnss3 \
    libx11-xcb1 \
    libxcomposite1 \
    libxdamage1 \
    libxrandr2 \
    xdg-utils \
    --no-install-recommends \
    && rm -rf /var/lib/apt/lists/*

# Tell Puppeteer to use system Chromium instead of downloading its own
ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true \
    PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium

WORKDIR /app

# Copy package files and install production dependencies
COPY backend/package*.json ./
RUN npm ci --omit=dev

# Copy the rest of the backend source
COPY backend/ .

EXPOSE 3000

CMD ["node", "index.js"]