Support docker for mac using the 'local' environment (#2686)

diff --git a/tests/src/test/scala/actionContainers/ActionContainer.scala b/tests/src/test/scala/actionContainers/ActionContainer.scala
index 63da8c7..f60cbfe 100644
--- a/tests/src/test/scala/actionContainers/ActionContainer.scala
+++ b/tests/src/test/scala/actionContainers/ActionContainer.scala
@@ -90,7 +90,9 @@
   }
 
   private lazy val dockerCmd: String = {
-    val hostStr = if (WhiskProperties.onMacOSX()) {
+    val version = WhiskProperties.getProperty("whisk.version.name")
+    // Check if we are running on docker-machine env.
+    val hostStr = if (version.toLowerCase().contains("mac")) {
       s" --host tcp://${WhiskProperties.getMainDockerEndpoint()} "
     } else {
       " "