Update frontend/Dockerfile via Son of Anton

frontend/Dockerfile

-# Stage 1: Dependencies
-FROM node:20-alpine AS deps
-WORKDIR /app
-COPY package.json package-lock.json* ./
-RUN npm ci --legacy-peer-deps
-
-# Stage 2: Build
 FROM node:20-alpine AS builder
-WORKDIR /app
-COPY --from=deps /app/node_modules ./node_modules
-COPY . .
 
-ENV NEXT_TELEMETRY_DISABLED=1
+RUN apk add --no-cache libc6-compat
+
+WORKDIR /build
+
+# Copy shared types
+COPY shared/ ./shared/
+
+# Copy frontend
+COPY frontend/package*.json ./frontend/
+WORKDIR /build/frontend
+RUN npm install --legacy-peer-deps
 
+COPY frontend/ ./
+
+# Build Next.js
+ENV NEXT_TELEMETRY_DISABLED=1
 RUN npm run build
 
-# Stage 3: Production
-FROM node:20-alpine AS runner
+# --- Production ---
+FROM node:20-alpine
+
+RUN apk add --no-cache libc6-compat
+
 WORKDIR /app
 
 ENV NODE_ENV=production
 ENV NEXT_TELEMETRY_DISABLED=1
 
-RUN addgroup --system --gid 1001 nodejs && \
-    adduser --system --uid 1001 nextjs
-
-COPY --from=builder /app/public ./public
-COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
-COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
-
-USER nextjs
+COPY --from=builder /build/frontend/.next/standalone ./
+COPY --from=builder /build/frontend/.next/static ./.next/static
+COPY --from=builder /build/frontend/public ./public
 
 EXPOSE 3000
 
-ENV PORT=3000
-ENV HOSTNAME="0.0.0.0"
-
 CMD ["node", "server.js"]
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