fix ssh key path

Signed-off-by: aiordache <anca.iordache@docker.com>

tests/Dockerfile-ssh-dind

diff --git a/tests/Dockerfile-ssh-dind b/tests/Dockerfile-ssh-dind
index f5fb72f..c2894c3 100644
--- a/tests/Dockerfile-ssh-dind
+++ b/tests/Dockerfile-ssh-dind
@@ -12,7 +12,7 @@
 # copy the test SSH config
 # Add the keys and set permissions
 RUN ssh-keygen -t rsa -N '' -f /root/.ssh/id_rsa
-RUN cat /root/ssh/id_rsa.pub > /root/.ssh/authorized_keys
+RUN cat /root/.ssh/id_rsa.pub > /root/.ssh/authorized_keys
 RUN chmod 600 /root/.ssh/authorized_keys
 
 RUN echo "IgnoreUserKnownHosts yes" >> /etc/ssh/sshd_config && \