Hi,
Thanks for your reply.
I investigated your tips. I am on the both last one actually. I have host and containers under ubuntu 16.04. I installed the client. I typed docker version and got client and server information. I typed also service docker status and I got docker is not running. It’s a little bit disturbing because socket makes the link between host and container. I rebuilt my container with java app with fresh install of docker. I ran this container with new command line you gave me. And that’s it. It works like a charm!