Mailcow: Adjust README for new repo structure.
The repository has been rewritten to base itself on git-subrepo rather
than git-subtree. The README is updated accordingly.
Change-Id: Iecf45a46b8b1171e0764c6ee038889c0e5be90b6
diff --git a/mailcow/README.adoc b/mailcow/README.adoc
index 1c6a0ec..003bd4f 100644
--- a/mailcow/README.adoc
+++ b/mailcow/README.adoc
@@ -50,14 +50,11 @@
=== Updating Mailcow
-Updating should usually be as easy as *synchronizing* the link:src/mailcow-dockerized/[] subtree with *upstream* and then <<Building the Docker image,rebuilding the image>>.
+Updating should usually be as easy as *synchronizing* the link:src/mailcow-dockerized/[] subrepo with *upstream* and then <<Building the Docker image,rebuilding the image>>.
-To synchronize the subtree, use `git subtree`:
+To synchronize the subrepo, use https://github.com/ingydotnet/git-subrepo[`git subrepo`]:
[source,shell script]
----
-git subtree pull \
- --prefix=mailcow/src/mailcow-dockerized \
- https://github.com/mailcow/mailcow-dockerized.git \
- master
+git subrepo pull mailcow/src/mailcow-dockerized
----