# syntax=docker/dockerfile:1

# ── Stage 1: deps ─────────────────────────────────────────────────────────────
FROM oven/bun:1 AS deps
WORKDIR /app

COPY frontend/package.json frontend/bun.lock* ./
RUN bun install --frozen-lockfile

# ── Stage 2: builder ──────────────────────────────────────────────────────────
FROM oven/bun:1 AS builder
WORKDIR /app

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

ENV NEXT_TELEMETRY_DISABLED=1
RUN bun run build

# ── Stage 3: runner ───────────────────────────────────────────────────────────
FROM oven/bun:1-slim AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

# Dedicated non-root user
RUN apt-get update && apt-get install -y --no-install-recommends adduser && rm -rf /var/lib/apt/lists/* && \
    addgroup --system --gid 1001 nodejs && \
    adduser  --system --uid 1001 nextjs

# Next.js standalone output
COPY --from=builder /app/public           ./public
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static     ./.next/static

# Writable data directory for file uploads
RUN mkdir -p /app/data/uploads && chown -R nextjs:nodejs /app/data

USER nextjs

EXPOSE 3000

ENV PORT=3000
ENV HOSTNAME=0.0.0.0

CMD ["bun", "server.js"]