Dockerfile

FROM node:18-alpine AS base

# This will be set by the GitHub action to the folder containing this component.
ARG FOLDER=/app

# 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

COPY . /app
WORKDIR ${FOLDER}

# Install dependencies based on the preferred package manager
RUN \
  if [ -f yarn.lock ]; then yarn --frozen-lockfile; \
  elif [ -f package-lock.json ]; then npm ci; \
  elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm i --frozen-lockfile; \
  else echo "Lockfile not found." && exit 1; \
  fi

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

# 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 \
  if [ -f yarn.lock ]; then yarn run build; \
  elif [ -f package-lock.json ]; then npm run build; \
  elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm run build; \
  else echo "Lockfile not found." && exit 1; \
  fi

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

COPY --from=builder --chown=1000:1000 /app /app
WORKDIR ${FOLDER}

# NOTE! We default to this now, production needs to be solved later
ENV NODE_ENV=development

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

# Automatically leverage output traces to reduce image size
# https://nextjs.org/docs/advanced-features/output-file-tracing
COPY --from=builder --chown=1000:1000 ${FOLDER}/.next/standalone ${FOLDER}
COPY --from=builder --chown=1000:1000 ${FOLDER}/.next/static ${FOLDER}/.next/static

USER 1000:1000

EXPOSE 3000
ENV PORT=3000
ENV HOSTNAME="0.0.0.0"

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