FROM node:22-alpine AS builder
WORKDIR /app

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

COPY . .
RUN npm run build

# ── Runtime image ──────────────────────────────────────────────────────────────
FROM node:22-alpine
WORKDIR /app

# adapter-node produces a standalone build/
COPY --from=builder /app/build ./build
COPY --from=builder /app/package.json ./

ENV NODE_ENV=production
ENV PORT=3000
ENV HOST=0.0.0.0

EXPOSE $PORT
CMD ["node", "build"]