Removed references to tcpcloud docker repos

Change-Id: Ibfb05319320c7f4fc86598e45f908a14105d39ea
diff --git a/aptly/server/docker.yml b/aptly/server/docker.yml
index c33f169..11ebc66 100644
--- a/aptly/server/docker.yml
+++ b/aptly/server/docker.yml
@@ -9,7 +9,7 @@
     aptly_server_mirror_sources: false
     aptly_server_mirror_ubuntu_sources: ${_param:aptly_server_mirror_sources}
     docker_image_aptly:
-      base: tcpcloud/aptly
+      base: mirantis/aptly
   aptly:
     server:
       enabled: true