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-rw-r--r--doc/guix.texi9
1 files changed, 6 insertions, 3 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 083504dcb8..3a9a909df8 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -7314,9 +7314,12 @@ specified binaries and symlinks.
 @item docker
 This produces a tarball that follows the
 @uref{https://github.com/docker/docker/blob/master/image/spec/v1.2.md,
-Docker Image Specification}.  The ``repository name'' as it appears in
-the output of the @command{docker images} command is computed from
-package names passed on the command line or in the manifest file.
+Docker Image Specification}.  By default, the ``repository name'' as it
+appears in the output of the @command{docker images} command is computed
+from package names passed on the command line or in the manifest file.
+Alternatively, the ``repository name'' can also be configured via the
+@option{--image-tag} option.  Refer to @option{--help-docker-format} for
+more information on such advanced options.
 
 @item squashfs
 This produces a SquashFS image containing all the specified binaries and