Dockerfile

FROM node:18-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.
RUN apk add --no-cache libc6-compat
WORKDIR /app

# Install dependencies based on the preferred package manager
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

RUN apk add --no-cache curl

# 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 --ingroup nodejs nextjs

COPY --from=builder --chown=nextjs:nodejs /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

# Create folders required for storing results and reports
ARG DATA_DIR=/app/data
ARG RESULTS_DIR=${DATA_DIR}/results
ARG REPORTS_DIR=${DATA_DIR}/reports
ARG TEMP_DIR=/app/.tmp
RUN mkdir -p ${DATA_DIR} && chown -R nextjs:nodejs ${DATA_DIR}
RUN mkdir -p ${RESULTS_DIR} && chown -R nextjs:nodejs ${RESULTS_DIR}
RUN mkdir -p ${REPORTS_DIR} && chown -R nextjs:nodejs ${REPORTS_DIR}
RUN mkdir -p ${TEMP_DIR} && chown -R nextjs:nodejs ${TEMP_DIR}

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
CMD HOSTNAME="0.0.0.0" node server.js

HEALTHCHECK --interval=3m --timeout=3s CMD curl -f http://localhost:3000/api/ping || exit 1