Update Dockerfile.frontend via Son of Anton

Dockerfile.frontend

+FROM node:20-alpine AS base
+RUN apk add --no-cache libc6-compat
+
+WORKDIR /app
+
+# Copy everything needed
+COPY frontend/package*.json ./
+RUN npm install --legacy-peer-deps
+
+COPY frontend/ ./
+COPY shared/ ../shared/
+
+ENV NEXT_TELEMETRY_DISABLED=1
+
+RUN npm run build
+
+# Production
+FROM node:20-alpine AS runner
+WORKDIR /app
+ENV NODE_ENV=production
+ENV NEXT_TELEMETRY_DISABLED=1
+
+COPY --from=base /app/.next/standalone ./
+COPY --from=base /app/.next/static ./.next/static
+COPY --from=base /app/public ./public
+
+EXPOSE 3000
+CMD ["node", "server.js"]
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