diff --git a/lib/docker_client.rb b/lib/docker_client.rb
index aac180d0..62e84032 100644
--- a/lib/docker_client.rb
+++ b/lib/docker_client.rb
@@ -162,11 +162,11 @@ class DockerClient
       stdout = []
       # map command in a shell call, maybe add -c
       command =  ['bash', '-c', command]
-      command.join(' ')
+      #command.join!(' ')
       # lets call the command, but we do not want the container to stop afterwards
       # thats why we use exec. If its ok do stop the container this could be assign instead
-      #container.exec(command) do |stream, chunk|
-      container.attach(stdin: StringIO.new(command)) do |stream, chunk|
+      container.exec(command) do |stream, chunk|
+      #container.attach(stdin: StringIO.new(command)) do |stream, chunk|
 
         block.call(stream, chunk) if block_given?
         if stream == :stderr