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@carlos-talavera
Created September 7, 2024 15:23
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Example of Dockerfile for a Next.js standalone build using pnpm
# Don't forget to add output: "standalone" on next.config
FROM node:22.6.0-alpine3.19 AS base
# Install system dependencies and pnpm dependencies
FROM base AS build-deps
RUN apk add --no-cache libc6-compat
ENV PNPM_HOME="/pnpm"
ENV PATH="$PNPM_HOME:$PATH"
RUN corepack enable
RUN corepack prepare pnpm@latest --activate
WORKDIR /app
COPY package.json pnpm-lock.yaml ./
RUN pnpm install --frozen-lockfile --prefer-frozen-lockfile
# Install sharp for image optimization
RUN pnpm add sharp
FROM base AS builder
# * Important. Use build time variables before building the app. If they're not used here, the build won't work
ARG NEXT_PUBLIC_BACKEND_URL
ENV NEXT_PUBLIC_BACKEND_URL=$NEXT_PUBLIC_BACKEND_URL
ARG FRONTEND_URL
ENV FRONTEND_URL=$FRONTEND_URL
ARG JWT_SECRET
ENV JWT_SECRET=$JWT_SECRET
RUN corepack enable
RUN corepack prepare pnpm@latest --activate
WORKDIR /app
COPY --from=build-deps /app/node_modules ./node_modules
COPY . .
RUN pnpm build
FROM base AS runner
# Set production environment
ENV NODE_ENV=production
# Disable telemetry
ENV NEXT_TELEMETRY_DISABLED=1
# Set the proper permissions to don't use the root user
RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nextjs
RUN mkdir .next
RUN chown nextjs:nodejs .next
# Copy the standalone output files to the correct folders (this is really important as well)
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
COPY --from=builder --chown=nextjs:nodejs /app/public ./public
USER nextjs
EXPOSE 3000
ENV PORT=3000
ENV HOSTNAME="0.0.0.0"
# Environment variables needed on runtime
ARG NEXT_PUBLIC_BACKEND_URL
ENV NEXT_PUBLIC_BACKEND_URL=$NEXT_PUBLIC_BACKEND_URL
ARG FRONTEND_URL
ENV FRONTEND_URL=$FRONTEND_URL
ARG JWT_SECRET
ENV JWT_SECRET=$JWT_SECRET
# Run the server
CMD ["node", "server.js"]
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