Update centos-full:7

base/centos-full:7

@@ -21,5 +21,5 @@ FROM centos:7.4.1708
  RUN /usr/bin/ssh-keygen -A
  RUN ssh-keygen -t rsa -P "" -f ~/.ssh/id_rsa -q
  RUN cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
- RUN chmod og-wx ~/.ssh/authorized_keys 
- RUN ssh-keyscan -H -t rsa localhost,`hostname -i`  >> ~/.ssh/known_hosts
+ RUN ssh-keyscan -H -t rsa localhost,$(hostname -i)  >> ~/.ssh/known_hosts
+ RUN chmod 700 ~/.ssh && chmod 600 ~/.ssh/*