Alpine builders have true at /bin/true only (busybox), not /usr/bin/true.

--- a/lore/tests/service_api.rs
+++ b/lore/tests/service_api.rs
@@ -286,7 +286,7 @@
         if cfg!(windows) {
             "where.exe"
         } else {
-            "/usr/bin/true"
+            "/bin/true"
         }
     }