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# Multi-stage build for Next.js application
# Stage 1: Dependencies
FROM node:20-alpine AS deps
RUN apk add --no-cache libc6-compat
WORKDIR /app
# Copy package files
COPY package.json package-lock.json* ./
RUN npm ci
# Stage 2: Builder
FROM node:20-alpine AS builder
WORKDIR /app
# Copy dependencies from deps stage
COPY --from=deps /app/node_modules ./node_modules
COPY . .
# Build arguments for environment variables
ARG NEXT_PUBLIC_API_URL
ARG NEXT_PUBLIC_APP_URL
ARG NEXT_PUBLIC_WS_URL
ENV NEXT_PUBLIC_API_URL=$NEXT_PUBLIC_API_URL
ENV NEXT_PUBLIC_APP_URL=$NEXT_PUBLIC_APP_URL
ENV NEXT_PUBLIC_WS_URL=$NEXT_PUBLIC_WS_URL
# Build the application
RUN npm run build
# Stage 3: Runner
FROM node:20-alpine AS runner
WORKDIR /app
ENV NODE_ENV production
# Create non-root user
RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nextjs
# Copy necessary files
COPY --from=builder /app/public ./public
# Set correct permissions for prerender cache
RUN mkdir .next
RUN chown nextjs:nodejs .next
# Copy build output
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"] |