Dockerfile

FROM cgr.dev/chainguard/node AS base

LABEL org.opencontainers.image.authors="matcor@noc.ac.uk"
LABEL org.opencontainers.image.description="Example OCI image for a NextJS application."
LABEL org.opencontainers.image.url="https://github.com/British-Oceanographic-Data-Centre/amrit-repos"
LABEL org.opencontainers.image.source="https://github.com/British-Oceanographic-Data-Centre/amrit-repos"
LABEL org.opencontainers.image.documentation="https://github.com/British-Oceanographic-Data-Centre/amrit-repos/wiki"
LABEL org.opencontainers.image.licenses="TBD"
LABEL org.opencontainers.image.vendor="Advance Marine Research Infrastructures Together (AMRIT)"

USER root

# Install dependencies only when needed
FROM base AS deps

WORKDIR /app

COPY package.json package-lock.json ./
RUN npm ci

# Rebuild the source code only when needed
FROM base AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .

# Next.js collects completely anonymous telemetry data about general usage.
# Learn more here: https://nextjs.org/telemetry
# Uncomment the following line in case you want to disable telemetry during the build.
# ENV NEXT_TELEMETRY_DISABLED=1

RUN npm run build

# 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/public ./public

# 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 ["server.js"]