Use apt-mk repository

Change-Id: I3a770c58f0c6c5fde8e58ee2f13e61e7c07e6248
diff --git a/ubuntu-14.04/scripts/docker.sh b/ubuntu-14.04/scripts/docker.sh
index ba1beeb..3f2dc82 100644
--- a/ubuntu-14.04/scripts/docker.sh
+++ b/ubuntu-14.04/scripts/docker.sh
@@ -2,8 +2,9 @@
 
 apt-get -y install curl
 
-echo "deb [arch=amd64] http://apt.tcpcloud.eu/nightly trusty main security extra tcp" >/etc/apt/sources.list
-curl -s http://apt.tcpcloud.eu/public.gpg | apt-key add -
+# Add apt-mk repository
+echo "deb [arch=amd64] http://apt-mk.mirantis.com/trusty/ nightly extra salt salt-latest" > /etc/apt/sources.list.d/apt-mk.list
+curl -sf http://apt-mk.mirantis.com/public.gpg | apt-key add -
 
 apt-get update