Adjust stdin handling in target command execution to inherit from the parent process

src/main.rs

@@ -2105,6 +2105,10 @@ fn run_target_command(
         cmd.env(k, v);
     }
 
+    // `Command::output()` defaults stdin to `/dev/null`. Minimal chroots may
+    // not have device nodes yet, so inherit stdin while still capturing output.
+    cmd.stdin(Stdio::inherit());
+
     let output = cmd.output().map_err(|err| {
         command_spawn_error(root, &resolved_program, &resolved_program_display, err)
     })?;