diff --git a/README.md b/README.md
index 5a383da..c38319b 100644
--- a/README.md
+++ b/README.md
@@ -37,3 +37,10 @@ of Dockerfiles and working with containers.
 
 make no mistake, this project does *not* strive for reproducible builds
 [in any way that nix does.](https://nixos.org/guides/how-nix-works.html)
+
+### Host OS
+
+this project must be built on a host running Linux.
+if you are not running Linux, use a VM of some sort.
+i personally use VirtualBox running Alpine Linux.
+i have not tried building with WSL2.