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# Use Node.js 18 Alpine for a lightweight image
FROM node:18-alpine AS base
# Install dependencies only when needed
FROM base AS deps
RUN apk add --no-cache libc6-compat
WORKDIR /app
# Copy package files
COPY package.json package-lock.json ./
RUN npm ci
# Rebuild the source code only when needed
FROM base AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
# Build Next.js application
RUN npm run build
# Production image, copy all the files and run next
FROM base AS runner
WORKDIR /app
ENV NODE_ENV=production
ENV PORT=7860
ENV HOSTNAME="0.0.0.0"
# Use the existing node user (UID 1000) which matches HF Spaces requirement
# Copy necessary files from builder
COPY --from=builder --chown=node:node /app/public ./public
COPY --from=builder --chown=node:node /app/.next/standalone ./
COPY --from=builder --chown=node:node /app/.next/static ./.next/static
# Switch to the node user (UID 1000)
USER node
# Expose the port the app runs on
EXPOSE 7860
# Start the application
CMD ["node", "server.js"]
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