It is related to #223 but I'm not asking to support Darwin targets, just allow to use docker for Darwin targets from Linux host.

I build myself a docker container which support cross compile from Linux to Darwin but I'm unable to use it with this Cross.toml :

[target.x86_64-apple-darwin]
image = "custom-cross:x86_64-apple-darwin"

When I run cross build --target x86_64-apple-darwin --release -v I don't see the docker run command in the log, cross fallback to cargo on the host.