aptly, local repos suitable for deployment
diff --git a/aptly/server/mirror/ubuntu/xenial/docker.yml b/aptly/server/mirror/ubuntu/xenial/docker.yml
index 64bf728..cfaaa32 100644
--- a/aptly/server/mirror/ubuntu/xenial/docker.yml
+++ b/aptly/server/mirror/ubuntu/xenial/docker.yml
@@ -10,6 +10,6 @@
           gpgkeys:
             - 58118E89F3A912897C070ADBF76221572C52609D
           publisher:
-            component: extra
+            component: docker
             distributions:
               - nightly/xenial