# ── Stage 1: build the React app ─────────────────────────
FROM node:20-alpine AS builder
WORKDIR /app

COPY package*.json ./
RUN npm install

COPY . .
RUN npm run build

# ── Stage 2: serve ────────────────────────────────────────
FROM node:20-alpine
WORKDIR /app

COPY --from=builder /app/dist ./dist
COPY --from=builder /app/server.cjs ./server.cjs

COPY package-runtime.json ./package.json
RUN npm install --production

EXPOSE 3000
ENV NODE_ENV=production
CMD ["node", "server.cjs"]