diff --git a/README.md b/README.md
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+++ b/README.md
@@ -1,7 +1,8 @@
 # Creatures - Build Environment
 
 This repository contains files to initialize a local Creatures build
-environment.
+environment. The build environment is built around Podman and specifically
+Toolbox.
 
 The build environment contains a complete C++ environment and the build2
 build system.