Seem the kernel version doesn't allow to update libc6 on Dev v8 from Linux Center.
Preinstall scripts expects to have numbers and they find non integer.
For the future ADM updates can you please make sure the kernel has numbers instead of letters.
4.14.x should be something like 4.14.0-x
Preparing to unpack .../libc6_2.19-18+deb8u10_amd64.deb ...
/var/lib/dpkg/tmp.ci/preinst: 381: [: Illegal number:
/var/lib/dpkg/tmp.ci/preinst: 18: /var/lib/dpkg/tmp.ci/preinst: arithmetic expression: expecting primary: "4 * 10000 + 14 * 100 + "