Add centos Dockerfile
Add git install in dockerfile
Correct syntax
Correct git problem
Add debian Dockerfile
Add -y to apt-get installations
correct apache user into www-data user
Modify unit tests system

Move each file type into one directory (php, diff, out, expect, tpl)
Rewrite check.sh, in order to make more automatic the procedure
Make check.sh independant from initial pwd
Merge pull request #1 from Niols/docker

Merge docker into master