# ---------- Etapa de build ----------
FROM node:18-alpine AS builder
WORKDIR /app

COPY package*.json ./
RUN npm install

COPY . .
RUN npm run build

# ---------- Etapa ligera para producción ----------
FROM node:18-alpine
WORKDIR /app

COPY --from=builder /app/dist ./dist
COPY package*.json ./
RUN npm install --production

EXPOSE 3001
CMD ["node", "dist/index.js"]