# Next.js 14 standalone — многоступенчатая сборка (см. output:'standalone').
FROM node:20-alpine AS deps
WORKDIR /app
COPY package.json package-lock.json* ./
RUN npm ci || npm install

FROM node:20-alpine AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
# API-база вшивается в клиентский бандл на этапе сборки.
ARG NEXT_PUBLIC_API_URL
ARG NEXT_PUBLIC_WS_URL
ENV NEXT_PUBLIC_API_URL=$NEXT_PUBLIC_API_URL
ENV NEXT_PUBLIC_WS_URL=$NEXT_PUBLIC_WS_URL
ENV NEXT_TELEMETRY_DISABLED=1
RUN npm run build

FROM node:20-alpine AS runner
WORKDIR /app
ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
RUN addgroup -g 1001 -S nodejs && adduser -S nextjs -u 1001
COPY --from=builder /app/public ./public
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
USER nextjs
EXPOSE 3000
ENV PORT=3000 HOSTNAME=0.0.0.0
CMD ["node", "server.js"]