Dockerfile

# Dockerfile for Next.js application
FROM node:20-alpine AS base

# Install pnpm
RUN npm install -g pnpm@9.15.0

# Dependencies stage
FROM base AS dependencies
WORKDIR /app

COPY package.json pnpm-lock.yaml ./
RUN pnpm install --frozen-lockfile

# Build stage
FROM base AS builder
WORKDIR /app

COPY --from=dependencies /app/node_modules ./node_modules
COPY . .

# Build the Next.js application
RUN pnpm run build

# Production stage
FROM base AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV PORT=3000
ENV HOSTNAME="0.0.0.0"

# Create a non-root user
RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nextjs

# Copy necessary files
COPY --from=builder /app/public ./public
COPY --from=builder /app/.next/standalone ./
COPY --from=builder /app/.next/static ./.next/static

# Set proper permissions
RUN chown -R nextjs:nodejs /app

USER nextjs

EXPOSE 3000

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