[doc] Update docker image name

doc/user/algorithms/guide.rst

@@ -164,13 +164,13 @@ Prerequisite: Configure your command-line client
 ================================================
 
 In order to ensure that your compiled algorithm will works on the |project| platform,
-you must compile it using our docker image called *beats/client*. Once downloaded,
-you'll need to configure the command-line tool to access your account on the |project|
-platform:
+you must compile it using our docker image *docker.idiap.ch/beat/beat.env.client*.
+Once downloaded, you'll need to configure the command-line tool to access your
+account on the |project| platform:
 
 .. code-block:: bash
 
-    $ docker run -ti beats/client:0.1.5 bash
+    $ docker run -ti docker.idiap.ch/beat/beat.env.client:2.0.0r1 bash
     /# cd home
     /home# beat config set user <your_user_name>
     /home# beat config set token "<your_token>"