# Shattered Void MMO - backend (Express + WebSocket)
# bookworm-slim rather than alpine: bcrypt ships glibc prebuilds, musl would force a source build.

FROM node:20-bookworm-slim AS deps
WORKDIR /app
COPY package.json package-lock.json ./
RUN npm ci

FROM node:20-bookworm-slim AS runtime
WORKDIR /app

RUN apt-get update \
    && apt-get install -y --no-install-recommends curl \
    && rm -rf /var/lib/apt/lists/*

COPY --from=deps /app/node_modules ./node_modules
COPY . .

# winston-daily-rotate-file writes here but does not create the directory itself
RUN mkdir -p logs && chown -R node:node /app

USER node
EXPOSE 3000

HEALTHCHECK --interval=15s --timeout=5s --start-period=30s --retries=5 \
    CMD curl -fsS http://localhost:3000/health || exit 1

CMD ["node", "src/server.js"]