feat: with export

Signed-off-by: kjuulh <contact@kjuulh.io>

crates/cuddle-ci/src/rust_service.rs

@@ -256,6 +256,8 @@ impl RustService {
             .collect::<Vec<_>>();
         let base = self.run_stage(before_build, base).await?;
 
+        base.export("export.tar").await?;
+
         let binary_build =
             base.with_exec(vec!["cargo", "build", "--release", "--bin", &self.bin_name]);