Dockerfile

# Stage 1: Build environment
FROM node:18-alpine AS builder

WORKDIR /app

# Enable corepack for Next.js build specifics if needed or rely on npm
RUN corepack enable

# Install dependencies based on the preferred package manager
COPY package.json package-lock.json* ./
RUN npm ci

COPY . .

# Run the build, emitting into .next (and standalone)
RUN npm run build

# Stage 2: Production environment
FROM node:18-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 the standalone output and static files
# Next.js standalone output automatically includes dependencies inside .next/standalone
COPY --from=builder /app/public ./public
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"]