FROM node:20-alpine AS deps
WORKDIR /app
COPY package*.json ./
RUN npm ci

FROM node:20-alpine AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
ENV NODE_ENV=production
RUN npm run build && npm cache clean --force

FROM node:20-alpine AS runner
RUN addgroup -S appgroup && adduser -S appuser -G appgroup
WORKDIR /app
COPY --from=builder --chown=appuser:appgroup /app/.output ./.output
USER appuser
ENV NODE_ENV=production
EXPOSE 3000
CMD ["node", ".output/server/index.mjs"]