Move enterprise version into this branch (#94)

Since the only difference is mattermost package and  we don't want
to maintain two difference branches, just moved the enterprise version
into a alternative dockerfile

.gitignore

@@ -0,0 +1,8 @@
+
+# Elastic Beanstalk Files
+.elasticbeanstalk/*
+!.elasticbeanstalk/*.cfg.yml
+!.elasticbeanstalk/*.global.yml
+
+# Generated data
+volumes