Dockerfile

# Stage 1: Install dependencies
FROM oven/bun:1-alpine AS deps
WORKDIR /app

# Install libc6-compat if needed (often required for some native modules on alpine)
RUN apk add --no-cache libc6-compat

COPY package.json bun.lock ./
RUN bun install --frozen-lockfile

# Stage 2: Build the application
FROM oven/bun:1-alpine AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .

# Environment variables must be present at build time for some Next.js optimizations
ENV NEXT_TELEMETRY_DISABLED 1

RUN bun run build

# Stage 3: Production runner
FROM node:20-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

# 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
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
ENV HOSTNAME "0.0.0.0"

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