Updated Dockerfiles to use ReleaseEIGHT-daily repo by default

Change-Id: I0dd48e273a3a12553062418f1da0d60f33bb23b2
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/docker/NG-UI/Dockerfile b/docker/NG-UI/Dockerfile
index 0f8febb..314beff 100644
--- a/docker/NG-UI/Dockerfile
+++ b/docker/NG-UI/Dockerfile
@@ -24,7 +24,7 @@
     && apt-get install -y nginx
 
 ARG REPOSITORY_BASE=http://osm-download.etsi.org/repository/osm/debian
-ARG RELEASE=ReleaseSEVEN-daily
+ARG RELEASE=ReleaseEIGHT-daily
 ARG REPOSITORY_KEY=OSM%20ETSI%20Release%20Key.gpg
 ARG REPOSITORY=testing
 ARG NGUI_VERSION