Dockerfile

# Install dependencies only when needed
FROM node:22.9-alpine 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
# ARG NODE_AUTH_TOKEN
# COPY .npmrc.docker .npmrc 
# Install dependencies based on the preferred package manager
COPY package.json yarn.lock* package-lock.json* pnpm-lock.yaml* .npmrc ./
RUN corepack enable && yarn set version berry

COPY .yarnrc.yml yarn.lock ./
COPY .yarn ./.yarn

RUN --mount=type=secret,id=NODE_AUTH_TOKEN \
    echo '//npm.pkg.github.com/:_authToken='$(cat /run/secrets/NODE_AUTH_TOKEN) >> .npmrc && \
    export NPM_AUTH_TOKEN=$(cat /run/secrets/NODE_AUTH_TOKEN) && \
    yarn install --immutable

# Rebuild the source code only when needed
FROM node:22.9-alpine AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .


ARG BUILDMODE
ENV BUILDMODE=${BUILDMODE}

# 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

ENV NODE_ENV=${BUILDMODE}

RUN echo "BUILDMODE" ${BUILDMODE}

COPY ${BUILDMODE}.env .env

RUN yarn build && rm -f .npmrc

# Production image, copy all the files and run next
FROM node:22.9-alpine 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 && adduser --system --uid 1001 nextjs

COPY --from=builder /app/public ./public

# 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

CMD ["node", "server.js"]
# CMD ["node_modules/.bin/next", "start"]