Missing package

src/freedombone

   # toxcore
   apt-get -y install build-essential libtool autotools-dev
   apt-get -y install automake checkinstall check git yasm
-  apt-get -y install libsodium13 libsodium-dev libcap2-bin
+  apt-get -y install libsodium13 libsodium-dev libcap2-bin libconfig9
 
   cd $INSTALL_DIR
   git clone $TOX_REPO