API fails to connect to mongodb in authenticated mode

On the current version, api fails to start when an admin user is defined for database authentication

blog-api_1  |  - Connecting to MongoDB at mongo:27017, database: meteor
blog-api_1  |    Database user is admin
blog-api_1  | (node:1) [MONGODB DRIVER] Warning: Top-level use of w, wtimeout, j, and fsync is deprecated. Use writeConcern instead.
blog-api_1  | (Use `node --trace-warnings ...` to show where the warning was created)
blog-api_1  |  - Server is running at http://127.0.0.1:5000 (Version 1.1.3)
blog-api_1  |  - Try http://127.0.0.1:5000/ping
blog-api_1  | Connection fails: MongoError: Authentication failed.
blog-api_1  | It will be retried for the next request.
blog-api_1  | /home/node/app/node_modules/mongodb/lib/utils.js:691
blog-api_1  |           throw error;
blog-api_1  |           ^
blog-api_1  | 
blog-api_1  | MongoError: Authentication failed.