$ sudo apt-get update
$ sudo apt-get install digikam-dbg 

digikam-dbg is installed in your system.

Make ensure the digikam-dbg package were installed using the commands given below,

$ sudo dpkg-query -l | grep digikam-dbg *

You will get with digikam-dbg package name, version, architecture and description in a table

digikam-dbg package basic information: