-b, --build directory [archive|directory]
       Creates a debian archive from the filesystem tree stored in directory. directory must have a DEBIAN subdirectory,  which
       contains  the  control  information  files such as the control file itself. This directory will not appear in the binary
       package's filesystem archive, but instead the files in it will be put in the binary package's control information area.

       Unless you specify --nocheck, dpkg-deb will read DEBIAN/control and parse it. It will check it  for  syntax  errors  and
       other problems, and display the name of the binary package being built.  dpkg-deb will also check the permissions of the
       maintainer scripts and other files found in the DEBIAN control information directory.

       If no archive is specified then dpkg-deb will write the package into the file directory.deb.

       If the archive to be created already exists it will be overwritten.

       If the second argument is a directory then dpkg-deb will write to the  file  package_version_arch.deb,  or  package_ver‐
       sion.deb  if  no Architecture field is present in the package control file. When a target directory is specified, rather
       than a file, the --nocheck option may not be used (since dpkg-deb needs to read and parse the package  control  file  to
       determine which filename to use).

dpkg-deb actions
       See dpkg-deb(1) for more information about the following actions.

       -b, --build directory [archive|directory]
           Build a deb package.