Dockerfile

# Stage 1: Build
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


# 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

COPY . .
# Verify the cache, just making sure it's not corrupted before building
RUN npm cache verify

# Add ARG/ENVs
ARG NEXT_PUBLIC_FIREBASE_API_KEY
ARG NEXT_PUBLIC_FIREBASE_AUTH_DOMAIN
ARG NEXT_PUBLIC_FIREBASE_PROJECT_ID
ARG NEXT_PUBLIC_FIREBASE_STORAGE_BUCKET
ARG NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID
ARG NEXT_PUBLIC_FIREBASE_APP_ID
ARG NEXT_PUBLIC_FIREBASE_MEASUREMENT_ID

ENV NEXT_PUBLIC_FIREBASE_API_KEY=$NEXT_PUBLIC_FIREBASE_API_KEY
ENV NEXT_PUBLIC_FIREBASE_AUTH_DOMAIN=$NEXT_PUBLIC_FIREBASE_AUTH_DOMAIN
ENV NEXT_PUBLIC_FIREBASE_PROJECT_ID=$NEXT_PUBLIC_FIREBASE_PROJECT_ID
ENV NEXT_PUBLIC_FIREBASE_STORAGE_BUCKET=$NEXT_PUBLIC_FIREBASE_STORAGE_BUCKET
ENV NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID=$NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID
ENV NEXT_PUBLIC_FIREBASE_APP_ID=$NEXT_PUBLIC_FIREBASE_APP_ID
ENV NEXT_PUBLIC_FIREBASE_MEASUREMENT_ID=$NEXT_PUBLIC_FIREBASE_MEASUREMENT_ID  


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

# 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
ENV NODE_ENV=production
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
CMD ["npm", "start"]