dub, copyFiles and linux

[Andre via Digitalmars-d-learn]

Hi,

I created a library which uses some shared objects. The dub.json 
looks like this:
{
	"name": "sec",
	"configurations": [
		{
			"name": "debug",
			"targetType": "library",
			"copyFiles":["lib/libssoext.so","lib/librypto.so"],
			"libs-posix": ["ssoext"],
			"lflags":["-L./.","-rpath=./."],
		}
	]
}
Within my project folder, there is a folder lib with the 2 so 
files.

Within my application project, I use this library. The dub.sdl 
looks like this:
name "demo"
targetName "app"
dependency "sec" version=">=0.0.1"

I would expect, while dub is compiling my application project, 
the 2 libs are
copied to my application folder. But that is not working.

I can't see why it is working with vibe-d projects (openssl 
libraries copied to application folder) but not for my project. 
There is no console output "copying files for..." while using dub 
for my application project.
What is wrong?

Kind regards
André