ciao-launcher: Fix docker dependency in ubuntu

The 'docker' package is being installed as a dependency to
get docker insalled in Ubuntu, however, the package needed
is 'docker-engine'

From apt-cache search docker
docker - System tray for KDE3/GNOME2 docklet applications
docker-engine - Docker: the open-source application container engine

Fixes #508

Signed-off-by: Alberto Murillo <[email protected]>

ciao-launcher/deps.go

@@ -62,5 +62,5 @@ var launcherComputeNodeDeps = map[string][]osprepare.PackageRequirement{
 	"fedora": append(launcherFedoraCommonDeps,
 		osprepare.PackageRequirement{BinaryName: "/usr/bin/docker", PackageName: "docker-engine"}),
 	"ubuntu": append(launcherUbuntuCommonDeps,
-		osprepare.PackageRequirement{BinaryName: "/usr/bin/docker", PackageName: "docker"}),
+		osprepare.PackageRequirement{BinaryName: "/usr/bin/docker", PackageName: "docker-engine"}),
 }