Dockerfile

# Stage 1: Dependencies
FROM node:22-alpine AS deps
RUN corepack enable && corepack prepare pnpm@latest --activate
WORKDIR /app

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

# Stage 2: Build
FROM node:22-alpine AS builder
RUN corepack enable && corepack prepare pnpm@latest --activate
WORKDIR /app

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

ENV NEXT_TELEMETRY_DISABLED=1
RUN pnpm build

# Stage 3: Production
FROM node:22-alpine AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
ENV PORT=8080
ENV HOSTNAME=0.0.0.0

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

# Copy public assets
COPY --from=builder /app/public ./public

# Copy standalone output
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

# kuromoji dictionary files are loaded at runtime via fs and are not
# traced into the standalone output, so copy them explicitly
COPY --from=builder --chown=nextjs:nodejs /app/node_modules/kuromoji/dict ./node_modules/kuromoji/dict

USER nextjs

EXPOSE 8080

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