Dockerfile

# Install dependencies only when needed
FROM node:16-bullseye-slim AS deps
RUN apt-get update && apt-get install libc6 openssl -y
WORKDIR /app

# Install dependencies based on the preferred package manager
COPY package.json yarn.lock* ./
RUN yarn install --frozen-lockfile

# 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

# If using npm comment out above and use below instead
# RUN npm run build

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

# Add `ARG` instructions below if you need `NEXT_PUBLIC_` variables
# then put the value on your fly.toml
# Example:
# ARG NEXT_PUBLIC_EXAMPLE="value here"

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


USER nextjs

EXPOSE 3000

ENV PORT 3000

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