Create web/Dockerfile

web/Dockerfile

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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"]