centos tags were changed, weak
Setup docker container to be configureable by ENV

Fixes most of https://github.com/palourde/uchiwa/issues/22

Just needs docs tweaking to have the right username +
a trusted build setting up.
Merge branch 'master' of https://github.com/bobtfish/uchiwa into bobtfish-master
Update docker documentation
Bump to 0.1.5