cd: do not install regular ubuntu dependencies on special targets #72

Job	Run time
Building macos-slim	2m 19s
Building macos-default	2m 18s
Building macos-full	2m 19s
Building linux-slim	2m 18s
Building linux-default	2m 19s
Building linux-full	2m 18s
Building linux-armhf-slim	2m 19s
Building linux-armhf-default	2m 19s
Building linux-armhf-full	2m 19s
Building linux-armv6-slim	2m 15s
release	0s
	23m 3s

Provide feedback