From 7158c7b8e59f8e3725f54e25917b45756d85adf3 Mon Sep 17 00:00:00 2001
From: Sergei Egorov <bsideup@gmail.com>
Date: Fri, 20 Jan 2017 23:30:51 +0200
Subject: [PATCH] fix for Docker for Mac with 1.13

---
 .../main/java/org/testcontainers/utility/TestEnvironment.java  | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/core/src/main/java/org/testcontainers/utility/TestEnvironment.java b/core/src/main/java/org/testcontainers/utility/TestEnvironment.java
index 3e858c35f3b..dbd8e45a98f 100644
--- a/core/src/main/java/org/testcontainers/utility/TestEnvironment.java
+++ b/core/src/main/java/org/testcontainers/utility/TestEnvironment.java
@@ -21,7 +21,8 @@ public static boolean dockerApiAtLeast(String minimumVersion) {
     public static boolean dockerExecutionDriverSupportsExec() {
         String executionDriver = DockerClientFactory.instance().getActiveExecutionDriver();
 
-        return !executionDriver.startsWith("lxc");
+        // Could be null starting from Docker 1.13
+        return executionDriver == null || !executionDriver.startsWith("lxc");
     }
 
     public static boolean dockerIsDockerMachine() {