Template: cnt-debconf/title Type: title Description: container-tools Template: cnt-debconf/preseed-files Type: select Default: none Choices: ${CHOICES} Description: Choose a preseed config, enter a custom one, or use no preseed file at all. Template: cnt-debconf/preseed-file Type: string Default: Description: Enter (optional) preseed file to use: Preseed file anyone? . If you do not want to use a preseed file, leave this question empty.