Cannot sign packages with GnuPG version 2.2+

[eklynx]

Because of the new keyring format in GnuPG 2.2, the script errors when trying to verify the key exists.

If I do a list keys when chrooted in the 6.2 x64 build environment, it reads the key but it is preceded with gpg: skipped packet of type 12 in keybox. The command exists with a exit code of 2.

This is a fresh install of the newest Ubunti server image,