.
└── mypackage_1.0_all                   # Package main folder
    ├── DEBIAN
    │   ├── control                     # File with package's main info
    │   ├── postinst                    # Script executing after the install
    │   └── preinst                     # Script executing before the install
    ├── opt
    │   └── mypackage                   # Folder including our software
    │       └── open_link.sh            # Script opening browser to ubuntu.com
    └── usr
        └── share
            ├── applications
            │   └── mypackage.desktop   # File with app info in launcher
            └── icons
                └── mypackage.xpm       # Launcher app icon

dpkg-deb --build ./mypackage_1.0_all

sudo gdebi -n ./mypackage_1.0_all.deb # test (requires gdebi-core)
sudo dpkg -i ./mypackage_1.0_all.deb # install

sudo apt autoremove mypackage