FROM node:18-slim AS base
WORKDIR /app

# Install dumb-init for proper signal handling
RUN apt-get update && \
    apt-get install -y --no-install-recommends dumb-init && \
    rm -rf /var/lib/apt/lists/*

# Copy dependency manifests first (layer cache)
COPY package.json package-lock.json* ./
RUN npm ci --omit=dev && npm cache clean --force

# Copy application code and entrypoint
COPY src/ ./src/
COPY docker-entrypoint.sh /usr/local/bin/
RUN chmod +x /usr/local/bin/docker-entrypoint.sh

RUN mkdir -p /app/data

EXPOSE 8000

ENTRYPOINT ["dumb-init", "--"]
CMD ["docker-entrypoint.sh"]