add global variables for debmir etckeeper and local_repo_mount
fixup type in /etc/apt/sources.list

fixup
add pre_install_configure function, preventing invoke-rc.d from starting services
add some check if getting the packages from local repo mirror, create chroot mount point accordingly
update list of packages to install
etckeeper post install configuration, setup gitignore adding shadow, group, passwd, setup git remote
add radmin user with radmin password, add repo user --disabled-login
clone debmir git project and create soft links to /usr/bin/
add repo cronttab jobs
update script entry point calling all the function in order.