diff --git a/tools/docker/README.md b/tools/docker/README.md
index 02e61be9c..a1df5397d 100644
--- a/tools/docker/README.md
+++ b/tools/docker/README.md
@@ -20,11 +20,12 @@ DNS plugin Docker images to Docker Hub.
 High-level behavior
 -------------------
 
-Running `./build.sh <TAG> && ./deploy.sh <TAG>` causes the Docker images to be
-built and deployed to Docker Hub where `<TAG>` is the base of the tag that
-should be given to the given images. The tag should either be `nightly` or a
-git version tag like `v0.34.0`. The given tag is only the base of the tag
-because the CPU architecture is also added to the tag.
+Running `./build.sh <TAG> all && ./deploy.sh <TAG>` causes the Docker images to
+be built and deployed to Docker Hub for all supported architectures where
+`<TAG>` is the base of the tag that should be given to the given images. The
+tag should either be `nightly` or a git version tag like `v0.34.0`. The given
+tag is only the base of the tag because the CPU architecture is also added to
+the tag.
 
 Configuration
 -------------