The cryptsetup package needs to be present in the container or container image.
LUKS is the upcoming standard for Linux hard disk encryption. By providing a standard on-disk format, it does not only facilitate compatibility among distributions, but also provide secure management of multiple user passwords. In contrast to existing solution, LUKS stores all necessary setup information in the partition header, enabling the user to transport or migrate their data seamlessly. LUKS for dm-crypt is implemented in cryptsetup.