FROM node:20-slim AS builder

WORKDIR /app

COPY frontend/package*.json ./
RUN npm install --legacy-peer-deps

COPY frontend/ ./

ARG NEXT_PUBLIC_API_URL=http://localhost:8000
ENV NEXT_PUBLIC_API_URL=${NEXT_PUBLIC_API_URL}

RUN npm run build

# ── Runtime ────────────────────────────────────────────────────────────────────
FROM node:20-slim

WORKDIR /app

COPY --from=builder /app/.next/standalone ./
COPY --from=builder /app/.next/static ./.next/static
COPY --from=builder /app/public ./public

EXPOSE 3000

ENV PORT=3000
ENV HOSTNAME=0.0.0.0

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