Feature/fix issue 566

[douglascrp]

This PR fixes #566 by avoiding having the alfresco-global.properties replaced by the one defined in the project. The "new" way to define custom alfresco-global.properties is by adding them into the Dockerfile file.

I guess the documentation will have to be reviewed to reflect this change, as there won't be an alfresco-global.properties anymore to be changed in order to have the project executed by maven.