# ── Stage 1: Install ──────────────────────────────────
FROM node:20-alpine AS deps
WORKDIR /app
COPY package.json package-lock.json ./
RUN npm ci --production=false

# ── Stage 2: Build ────────────────────────────────────
FROM node:20-alpine AS build
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
RUN npm run build

# ── Stage 3: Runtime ──────────────────────────────────
FROM node:20-alpine AS runtime
WORKDIR /app
ENV NODE_ENV=production

COPY --from=build /app/dist ./dist
COPY --from=deps /app/node_modules ./node_modules
COPY package.json ./

EXPOSE 4016

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