Dockerfile

# syntax=docker.io/docker/dockerfile:1

FROM node:18-alpine AS base

# Stage 1: Dependencies
FROM base AS deps
RUN apk add --no-cache libc6-compat

WORKDIR /app

# Install pnpm
RUN corepack enable && corepack prepare pnpm@9.15.2 --activate

# Copy package files
COPY package.json pnpm-lock.yaml ./

# Install dependencies
RUN pnpm install --frozen-lockfile

# Stage 2: Builder
FROM base AS builder
WORKDIR /app

# Install pnpm
RUN corepack enable && corepack prepare pnpm@9.15.2 --activate

# Copy dependencies from deps stage
COPY --from=deps /app/node_modules ./node_modules
COPY . .

# Build application
ENV NEXT_TELEMETRY_DISABLED=1
RUN pnpm build

# Stage 3: Runner
FROM base AS runner
WORKDIR /app


RUN addgroup -g 1001 -S nodejs
RUN adduser -S nextjs -u 1001

# Set proper permissions
RUN mkdir .next && \
    chown nextjs:nodejs .next

# Copy only necessary files
COPY --from=builder --chown=nextjs:nodejs /app/public ./public
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

# Set environment variables
ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

# Switch to non-root user
USER nextjs

# Expose port
EXPOSE 3000

ENV PORT=3000

CMD HOSTNAME="0.0.0.0" node server.js