Dockerfile

FROM node:16-alpine AS deps
RUN apk add --no-cache libc6-compat
WORKDIR /app

COPY package.json yarn.lock server.js next.config.js ./
RUN \
  if [ -f yarn.lock ]; then yarn --frozen-lockfile; \
  else echo "Lockfile not found." && exit 1; \
  fi


# Rebuild the source code only when needed
FROM node:16-alpine AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .

ENV NEXT_TELEMETRY_DISABLED 1

RUN yarn build

# Production image, copy all the files and run next
FROM node:16-alpine AS runner
WORKDIR /app

ENV NODE_ENV production
ENV NEXT_TELEMETRY_DISABLED 1

RUN addgroup --system --gid 1001 nodejs
RUN 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
COPY --from=builder --chown=nextjs:nodejs /app/next.config.js ./next.config.js
COPY --from=builder --chown=nextjs:nodejs /app/server.js ./server.js

USER nextjs

EXPOSE 8080

ENV PORT 8080

CMD ["node", "server.js"]