From 6b6fec025d387bcf6d076b431362b8aa366f0ab8 Mon Sep 17 00:00:00 2001
From: Maximilian Grundke <maximiliangrundke@googlemail.com>
Date: Fri, 15 Jun 2018 14:23:20 +0200
Subject: [PATCH] Fix socket being nil in tests

---
 lib/docker_client.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/docker_client.rb b/lib/docker_client.rb
index ed5d20d5..b44191aa 100644
--- a/lib/docker_client.rb
+++ b/lib/docker_client.rb
@@ -186,7 +186,9 @@ class DockerClient
   end
 
   def self.destroy_container(container)
-    @socket.close
+    if @socket
+      @socket.close
+    end
     Rails.logger.info('destroying container ' + container.to_s)
     container.stop.kill
     container.port_bindings.values.each { |port| PortPool.release(port) }