FROM node:20-alpine AS builder
WORKDIR /app

# Install dependencies
COPY package*.json ./
RUN npm ci --omit=dev

# Copy source
COPY . .

# Build (if needed)
RUN npm run build || true

FROM node:20-alpine
WORKDIR /app

ENV NODE_ENV=production

COPY --from=builder /app /app

EXPOSE 3000

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