Dockerfile

FROM node:20-alpine AS base

# Step 1. Rebuild the source code only when needed
FROM base AS builder

WORKDIR /app
ARG ENV_FILE=.env.prod

RUN apk add --update python3 make g++ \
&& rm -rf /var/cache/apk/*

# Install pnpm globally
RUN corepack enable && corepack prepare pnpm@latest --activate

COPY . ./

RUN mv $ENV_FILE tempenv && rm .env.* && mv tempenv .env

# Omit --production flag for TypeScript devDependencies
# RUN pnpm install;

# Environment variables must be present at build time
# https://github.com/vercel/next.js/discussions/14030
# ARG NEXT_PUBLIC_APP_URL
# ENV NEXT_PUBLIC_APP_URL=${NEXT_PUBLIC_APP_URL}

# ARG NEXT_PUBLIC_API_URL
# ENV NEXT_PUBLIC_API_URL=${NEXT_PUBLIC_API_URL}

# Next.js collects completely anonymous telemetry data about general usage. Learn more here: https://nextjs.org/telemetry
# Uncomment the following line to disable telemetry at build time
# ENV NEXT_TELEMETRY_DISABLED 1

# Build Next.js based on the preferred package manager
RUN pnpm install --frozen-lockfile
RUN pnpm build

################################################################################################################################

# Note: It is not necessary to add an intermediate step that does a full copy of `node_modules` here

# Step 2. Production image, copy all the files and run next
FROM base AS runner

WORKDIR /app

ENV NODE_ENV=production
# Uncomment the following line in case you want to disable telemetry during runtime.
# ENV NEXT_TELEMETRY_DISABLED 1

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

COPY --from=builder /app/.env ./
COPY --from=builder /app/public ./public
COPY --from=builder /app/package.json ./package.json
COPY --from=builder /app/pnpm-lock.yaml ./pnpm-lock.yaml

# 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

# Environment variables must be redefined at run time
# ARG NEXT_PUBLIC_APP_URL
# ENV NEXT_PUBLIC_APP_URL=${NEXT_PUBLIC_APP_URL}

# ARG NEXT_PUBLIC_API_URL
# ENV NEXT_PUBLIC_API_URL=${NEXT_PUBLIC_API_URL}
# Uncomment the following line to disable telemetry at run time
# ENV NEXT_TELEMETRY_DISABLED 1
# Expose the listening port
EXPOSE 3000

ENV PORT 3000
CMD ["node", "server.js"]