Dockerfile

# Use official Node.js image as base
FROM node:latest AS builder

# Set the working directory in the container
WORKDIR /app

# Copy package.json and pnpm-lock.yaml to the working directory
COPY package.json pnpm-lock.yaml ./

# Install pnpm globally
RUN npm install -g pnpm

# Install dependencies using pnpm
RUN pnpm install

# Copy the rest of the application code to the working directory
COPY . .

# Build the Next.js application
RUN pnpm run build

# Use lightweight Node.js image as the base for the final image
FROM node:alpine

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

COPY --from=builder /app/next.config.js .
COPY --from=builder /app/package.json .

# 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
COPY --from=builder --chown=nextjs:nodejs /app/public ./public

USER nextjs

EXPOSE 3000

ENV PORT 3000
# set hostname to localhost
ENV HOSTNAME "0.0.0.0"

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