fix(docker): run next directly with -H and -p to avoid npm usage exit

Dockerfile

@@ -22,4 +22,5 @@ ENV HOST=0.0.0.0
 # Disable telemetry and ensure production env
 ENV NEXT_TELEMETRY_DISABLED=1
 ENV NODE_ENV=production
-CMD ["sh", "-c", "npm start -- -p ${PORT:-3000}"]
+# Run Next directly to avoid npm CLI usage output if args aren't forwarded
+CMD ["sh", "-c", "node node_modules/next/dist/bin/next start -H 0.0.0.0 -p ${PORT:-3000}"]