FROM node:20-alpine AS deps

WORKDIR /app
COPY package.json package-lock.json ./
RUN npm ci --only=production

FROM deps AS builder
COPY . .
RUN npm run build

FROM node:20-alpine AS runner

RUN addgroup -S app && adduser -S -G app app
WORKDIR /app

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

USER app
EXPOSE 3000

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