Update Dockerfile

Dockerfile

@@ -1,67 +1,66 @@
-# --- Stage 1: Builder ---
-# Use a Node.js image suitable for building (includes build tools if needed)
-FROM node:18-alpine AS builder
-RUN ls
-# Set working directory
-WORKDIR /root
-RUN ls
+# syntax=docker.io/docker/dockerfile:1
 
-RUN npm install
-
-# Copy package.json and package-lock.json (or yarn.lock/pnpm-lock.yaml)
-# Copying these separately allows Docker to cache this step if only code changes
-COPY package.json ./
-# If you are using yarn, uncomment the line below and comment out the npm line
-# COPY yarn.lock ./
-# If you are using pnpm, uncomment the line below and comment out the npm line
-# COPY pnpm-lock.yaml ./
-COPY package-lock.json ./ # Use package-lock.json if you use npm
+FROM node:18-alpine AS base
 
+# Install dependencies only when needed
+FROM base AS deps
+# Check https://github.com/nodejs/docker-node/tree/b4117f9333da4138b03a546ec926ef50a31506c3#nodealpine to understand why libc6-compat might be needed.
+RUN apk add --no-cache libc6-compat
+WORKDIR /app
 
-# Install dependencies including devDependencies for the build
-# Use --frozen-lockfile or --ci for deterministic builds if using npm or yarn v1
-RUN npm ci # Or `yarn install --frozen-lockfile` or `pnpm install --frozen-lockfile`
+# Install dependencies based on the preferred package manager
+COPY package.json yarn.lock* package-lock.json* pnpm-lock.yaml* .npmrc* ./
+RUN \
+  if [ -f yarn.lock ]; then yarn --frozen-lockfile; \
+  elif [ -f package-lock.json ]; then npm ci; \
+  elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm i --frozen-lockfile; \
+  else echo "Lockfile not found." && exit 1; \
+  fi
 
 
-# Copy the rest of the application code
+# Rebuild the source code only when needed
+FROM base AS builder
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
 COPY . .
 
-# Build the Next.js application
-# NEXT_TELEMETRY_DISABLED=1 disables Next.js telemetry during the build
-RUN NEXT_TELEMETRY_DISABLED=1 npm run build
+# Next.js collects completely anonymous telemetry data about general usage.
+# Learn more here: https://nextjs.org/telemetry
+# Uncomment the following line in case you want to disable telemetry during the build.
+# ENV NEXT_TELEMETRY_DISABLED=1
 
-# --- Stage 2: Runner ---
-# Use a smaller, production-focused Node.js image
-FROM node:18-alpine AS runner
+RUN \
+  if [ -f yarn.lock ]; then yarn run build; \
+  elif [ -f package-lock.json ]; then npm run build; \
+  elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm run build; \
+  else echo "Lockfile not found." && exit 1; \
+  fi
 
-# Set working directory
+# Production image, copy all the files and run next
+FROM base AS runner
 WORKDIR /app
 
-# Copy necessary files from the builder stage
-# Copy production dependencies
-COPY --from=builder /app/package.json ./
-COPY --from=builder /app/node_modules ./node_modules
-# Copy the build output (.next folder)
-COPY --from=builder /app/.next ./.next
-# Copy public assets
-COPY --from=builder /app/public ./public
-# Copy next.config.js if it exists
-COPY --from=builder /app/next.config.js ./next.config.js
+ENV NODE_ENV=production
+# Uncomment the following line in case you want to disable telemetry during runtime.
+# ENV NEXT_TELEMETRY_DISABLED=1
+
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 nextjs
 
+COPY --from=builder /app/public ./public
 
-# Set the environment variable for the Next.js port (default is 3000)
-# Hugging Face Spaces typically exposes port 7860 for Gradio/Streamlit/etc,
-# but for general web apps (like Next.js via the static host option or if you set up a custom server),
-# it might expose port 3000 by default when detecting a standard Next.js app.
-# It's good practice to set this, but Spaces often handles port mapping.
-ENV PORT 3000
+# Automatically leverage output traces to reduce image size
+# https://nextjs.org/docs/advanced-features/output-file-tracing
+COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
+COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
 
+USER nextjs
 
-# Expose the port the application will run on
 EXPOSE 3000
 
-# Disable Next.js telemetry at runtime
-ENV NEXT_TELEMETRY_DISABLED 1
+ENV PORT=3000
 
-# Command to run the production Next.js server
-CMD ["npm", "start"]
+# server.js is created by next build from the standalone output
+# https://nextjs.org/docs/pages/api-reference/config/next-config-js/output
+ENV HOSTNAME="0.0.0.0"
+CMD ["node", "server.js"]