FROM node:20-bookworm-slim AS builder

WORKDIR /app

COPY frontend/package.json frontend/package-lock.json ./
RUN npm ci

COPY frontend ./
RUN npm run build

FROM node:20-bookworm-slim

ENV NODE_ENV=production

WORKDIR /app

COPY --from=builder /app/build ./build
COPY --from=builder /app/package.json ./package.json
COPY --from=builder /app/node_modules ./node_modules

EXPOSE 3000

CMD ["node", "build"]