Dockerfile

# syntax=docker/dockerfile:1

ARG NODE_VERSION=20.19.0

FROM node:${NODE_VERSION}-alpine AS base
WORKDIR /app
ENV NEXT_TELEMETRY_DISABLED=1

FROM base AS deps
COPY package*.json ./
RUN npm ci

FROM base AS builder
ARG NEXT_PUBLIC_BACKEND_URL
ENV NEXT_PUBLIC_BACKEND_URL=${NEXT_PUBLIC_BACKEND_URL}
COPY --from=deps /app/node_modules ./node_modules
COPY . .
RUN npm run build

FROM node:${NODE_VERSION}-alpine AS runner
WORKDIR /app
ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
ENV PORT=3000
ENV HOSTNAME=0.0.0.0

RUN addgroup -S nextjs && adduser -S nextjs -G nextjs

COPY --from=builder /app/public ./public
COPY --from=builder --chown=nextjs:nextjs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nextjs /app/.next/static ./.next/static

USER nextjs

EXPOSE 3000

CMD ["node", "server.js"]