better config implementation from ENV or json file.

using new environment;
params passed as docker-compose params

db/users.js

@@ -1,7 +1,6 @@
 var records = [
     { id: 1, username: 'me', password: 'A23', displayName: 'admin', emails: [ { value: 'jack@example.com' } ] }
     , { id: 2, username: 'db', password: 'doby', displayName: 'DB', emails: [ { value: 'jill@example.com' } ] }
-    , { id: 3, username: 'popov', password: 'Zelenakrav@', displayName: 'Doby', emails: [ { value: 'db@example.com' } ] }
 ];
 
 exports.findById = function(id, cb) {