Linux local deb package directory

To build file Package.gz inside deb directory use:

cd to parent directory
build 

dpkg-scanpackages $directory-name /dev/null | gzip -9c > $directory-name/Packages.gz

Update /etc/apt/sources.list

deb file:$parent-directory/ $directory-name/

execute

apt-get update

Look for package from file

apt-get install apt-file

apt-file update

apt-file search $file-name