dpkg does not take a --force-yes option

If you try to install a .deb (uploaded or downloaded outside of the usual `apt` channels), and you set `force=yes`, you'll get an error because `dkpg` (unlike `apt-get` or `aptitude`) will not take `--force-yes`.

Substituting a mostly similar command, which will make sure you will install the package even if it's probably a bad idea.