Dockerfile

FROM node:25.2-alpine AS base

# Install dependencies only when needed
FROM base AS deps
# Check https://github.com/nodejs/docker-node/tree/b4117f9333da4138b03a546ec926ef50a31506c3#nodealpine to understand why libc6-compat might be needed.
# Install build dependencies for native modules (zlib-sync, etc.)
RUN apk add --no-cache libc6-compat python3 make g++
WORKDIR /app

# Install dependencies based on the preferred package manager
COPY package.json package-lock.json* ./
RUN npm ci

# Dev stage with source code for docker-compose
FROM base AS dev
WORKDIR /app
ENV NEXT_TELEMETRY_DISABLED=1
COPY --from=deps /app/node_modules ./node_modules
COPY . .
RUN npx prisma generate

# Rebuild the source code only when needed
FROM base AS builder
WORKDIR /app
ENV NEXT_TELEMETRY_DISABLED=1 \
    DATABASE_URL="postgresql://placeholder:placeholder@localhost:5432/placeholder"

COPY --from=deps /app/node_modules ./node_modules
COPY . .

# Generate Prisma Client and build
RUN npx prisma generate && npm run build

# Production image, copy all the files and run next
FROM base AS runner
WORKDIR /app

ENV NEXT_TELEMETRY_DISABLED=1 \
    PORT=3000 \
    HOSTNAME="0.0.0.0"

# Create non-root user and set up entrypoint
RUN addgroup --system --gid 1001 nodejs && \
    adduser --system --uid 1001 nextjs

# Copy public assets and Next.js standalone output
# https://nextjs.org/docs/advanced-features/output-file-tracing
COPY --from=builder --chown=nextjs:nodejs /app/public ./public
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

# Copy Prisma schema, migrations, config, and generated client
COPY --from=builder --chown=nextjs:nodejs /app/prisma/schema.prisma ./prisma/schema.prisma
COPY --from=builder --chown=nextjs:nodejs /app/prisma/migrations ./prisma/migrations
COPY --from=builder --chown=nextjs:nodejs /app/prisma.config.ts ./prisma.config.ts
COPY --from=builder --chown=nextjs:nodejs /app/lib/generated/prisma ./lib/generated/prisma

# Install Prisma CLI for runtime migrations
COPY --from=builder /app/package.json ./package.json
RUN PRISMA_VERSION=$(node -p "require('./package.json').devDependencies.prisma") && \
    DOTENV_VERSION=$(node -p "require('./package.json').dependencies.dotenv") && \
    npm install --no-package-lock "prisma@${PRISMA_VERSION}" "dotenv@${DOTENV_VERSION}" && \
    npm cache clean --force && \
    chown -R nextjs:nodejs node_modules

# Copy entrypoint script
COPY --chmod=755 --chown=nextjs:nodejs docker-entrypoint.sh ./docker-entrypoint.sh

USER nextjs

EXPOSE 3000

# server.js is created by next build from the standalone output
# https://nextjs.org/docs/pages/api-reference/next-config-js/output
ENTRYPOINT ["./docker-entrypoint.sh"]
CMD ["npm", "run", "start:prod"]