Created by: putcn

fix: #9391 (closed) fix #7476 (closed)

the issue is about syntax issue when run the default command "paddle version" from production docker image.

[root@k8s-node1 ~]# docker run --rm -it putcn/paddle:pro
/usr/local/bin/paddle: line 158: [: 0.10.0: binary operator expected
  File "<stdin>", line 3
    if LooseVersion("0.10.0
                          ^
SyntaxError: EOL while scanning string literal

the fix is to adding a pair of missing quote, and corrected the logic grabbing the current paddle version