update of hello-world-nginx image for UBI

Student User

2019-06-27 c08808463901886bb09dcc782959b9cbfb72972d

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s/listen       80/listen       8080/
s/listen       \[::\]:80/listen       \[::\]:8080/
s/user nginx;//
s%error_log /var/log/nginx/error.log%error_log stderr%
s%access_log  /var/log/nginx/access.log  main;%%