Update docker section to use pre-built docker images
Update docker section to use pre-built docker images

AmeBel/relex,opencog/relex,opencog/relex,leungmanhin/relex,AmeBel/relex,opencog/relex,linas/relex,AmeBel/relex,linas/relex,linas/relex,leungmanhin/relex,leungmanhin/relex