I'm trying to move an existing node.js express app from Heroku to AWS. The app uses MongoDB for the database. The problem is aws EB (Elastic Beanstalk) doesn't natively support no-sql databases (I understand that I need to use a VPC and am able to connect a VPC to MongoDB). I'm a little confused with setup both on the app's code (how the config files should be written/if any backend changes that might be needed), and how it should be setup in AWS. Is there a better option for this? Right now eb deploy fails and the logs don't seem helpful. Any advice is greatly appreciated.

config.yml

branch-defaults:
  Master:
    environment: Testproject-env
environment-defaults:
  Testproject-env:
    branch: null
    repository: null
global:
  application_name: test-project
  default_ec2_keyname: null
  default_platform: Node.js
  default_region: us-east-2
  include_git_submodules: true
  instance_profile: null
  platform_name: null
  platform_version: null
  profile: eb-cli
  sc: git
  workspace_type: Application

nodecommand.config

option_settings:
  aws:elasticbeanstalk:container:nodejs:
    NodeCommand: "npm start"

app.js

const express = require("express");
const mongoose = require('mongoose');
const users = require('./routes/api/users');
const bodyParser = require('body-parser');
const passport = require('passport');
const path = require('path')

const app = express();

if (process.env.NODE_ENV === 'production') {
    app.use(express.static('frontend/build'));
    app.get('/', (req, res) => {
        res.sendFile(path.resolve(__dirname, 'frontend', 'build', 'index.html'));
    })
}

const db = require('./config/keys_dev').mongoURI;
mongoose
    .connect(db, { useNewUrlParser: true })
    .then(() => console.log("Connected to MongoDB successfully"))
    .catch(err => console.log(err));

app.use(passport.initialize());
require('./config/passport')(passport);

app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());

app.use('/api/users', users);

const port = process.env.PORT || 5000;

app.listen(port, () => console.log(`Server is running on port ${port}`));