FROM node:20-alpine AS base

# Stage 1: Install deps
FROM base AS deps
RUN apk add --no-cache python3 make g++ gcc
WORKDIR /app
COPY package.json package-lock.json* ./
RUN npm ci

# Stage 2: Build
FROM base AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
RUN npm run build

# Stage 3: Production runner
FROM base AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
ENV DB_PATH=/app/data/zombie_invasion.db

RUN addgroup --system --gid 1001 nodejs && \
    adduser --system --uid 1001 nextjs

COPY --from=builder /app/.next/standalone ./
COPY --from=builder /app/.next/static ./.next/static
COPY --from=builder /app/docker-entrypoint.sh ./

RUN chmod +x docker-entrypoint.sh
RUN mkdir -p /app/data && chown -R nextjs:nodejs /app/data

EXPOSE 3000
ENV PORT=3000
ENV HOSTNAME=0.0.0.0

ENTRYPOINT ["/bin/sh", "docker-entrypoint.sh"]