Updated Dockerfiles to use ReleaseEIGHT-daily repo by default

Change-Id: I0dd48e273a3a12553062418f1da0d60f33bb23b2
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/docker/light-ui/Dockerfile b/docker/light-ui/Dockerfile
index 79262d1..204bfd8 100644
--- a/docker/light-ui/Dockerfile
+++ b/docker/light-ui/Dockerfile
@@ -20,7 +20,7 @@
 RUN echo "daemon off;" >> /etc/nginx/nginx.conf
 
 ARG REPOSITORY_BASE=http://osm-download.etsi.org/repository/osm/debian
-ARG RELEASE=ReleaseFOUR-daily
+ARG RELEASE=ReleaseEIGHT-daily
 ARG REPOSITORY_KEY=OSM%20ETSI%20Release%20Key.gpg
 ARG REPOSITORY=testing
 ARG LWUI_VERSION