Search notes:

/etc/dpkg/dpkg.cfg

/etc/dpkg/dpkg.cfg is the configuration file for dpkg and stores default (command line?) options for dpkg.
# Do not enable debsig-verify by default; since the distribution is not using
# embedded signatures, debsig-verify would reject all packages.
no-debsig

# Log status changes and actions to a file.
log /var/log/dpkg.log

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