Update on the container: exterior and cloves are not contaminated apparently, but rather a package of pallets and piping bags inside the container.
I doubt it means the piping bags used in cooking, but the Indonesian article uses the English name for it. Probably something specific to shipping.
https://www.jawapos.com/surabaya-raya/016791410/bapeten-temukan-sumber-radioaktif-cesium-137-di-kontainer-cengkeh-saat-pemeriksaan-di-tanjung-perak-surabaya