Generating a new ubuntu-keyring .deb to sign CD

[Nicholas Bayle]

Hello,

Trying to follow this guide to create a custom 16.04 install CD:
https://help.ubuntu.com/community/InstallCDCustomization#Generating_a_new_ubuntu-keyring_.deb_to_sign_your_CD

When trying to generate a new ubuntu-keyring, I keep running into this
issue:
dpkg-buildpackage -rfakeroot -m"Name <email>" -kA5E86765
dpkg-buildpackage: source package ubuntu-keyring
dpkg-buildpackage: source version 2012.05.19-1
dpkg-buildpackage: source distribution unstable
dpkg-buildpackage: host architecture amd64
 dpkg-source --before-build ubuntu-keyring-2012.05.19
 fakeroot debian/rules clean
dh clean
   dh_testdir
   dh_auto_clean
   dh_clean
 dpkg-source -b ubuntu-keyring-2012.05.19
dpkg-source: info: using source format '3.0 (quilt)'
dpkg-source: info: building ubuntu-keyring using existing
./ubuntu-keyring_2012.05.19.orig.tar.gz
dpkg-source: error: cannot represent change to
keyrings/ubuntu-archive-keyring.gpg: binary file contents changed
dpkg-source: error: add keyrings/ubuntu-archive-keyring.gpg in
debian/source/include-binaries if you want to store the modified binary in
the debian tarball
dpkg-source: error: unrepresentable changes to source
dpkg-buildpackage: error: dpkg-source -b ubuntu-keyring-2012.05.19 gave
error exit status 2

Has anyone run into this issue *in this context*?

Thanks,
Nick
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