Dockerfile

# syntax=docker.io/docker/dockerfile:1
# File based on https://github.com/vercel/next.js/tree/canary/examples/with-docker

FROM node:20.18-alpine AS base
# Check https://github.com/nodejs/docker-node/tree/b4117f9333da4138b03a546ec926ef50a31506c3#nodealpine to understand why libc6-compat might be needed.
RUN apk add --no-cache libc6-compat
WORKDIR /app

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

FROM base AS builder
COPY --from=deps /app/node_modules node_modules
COPY . .

# Generate Prisma client
RUN npx prisma generate

# Build the app
ARG DOCKER_TAG
ENV DOCKER_TAG=$DOCKER_TAG
ENV NEXT_TELEMETRY_DISABLED=1
RUN npm run build

FROM base AS runner
ENV NODE_ENV=production

RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nextjs

# Set the correct permission for prerender cache
RUN mkdir .next
RUN chown nextjs:nodejs .next

# Automatically leverage output traces to reduce image size
# https://nextjs.org/docs/advanced-features/output-file-tracing
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

# server.js is created by next build from the standalone output
# https://nextjs.org/docs/pages/api-reference/next-config-js/output
ENV HOSTNAME="0.0.0.0"
CMD ["node", "server.js"]