Add warning about repo2podman and WSL.

docs/tasks/repo2docker-local.qmd

@@ -55,6 +55,10 @@ Note that you may see (possibly harmless) architecture mismatch warnings with th
 
 You can instruct `repo2docker` to use your machine's local `docker` executable directly rather than the default of `docker-py`. You will first need to install [repo2podman](https://github.com/manics/repo2podman), a plugin that lets you use any container runtime with a command-line user interface similar to that of `docker`. This is useful if you want to leverage [docker buildx](https://github.com/docker/buildx/) (for things like multi-stage builds) or if you want to use an alternative executable like `podman`. This also eliminates architecture mismatch warnings.
 
+::: {.callout-warning}
+repo2podman reportedly does not work yet on WSL.
+:::
+
 ```
 repo2docker \
   --Repo2Docker.platform=linux/amd64 \