Hello,

In order to be able to connect to the MongoDB container from the outside world, you would need to make sure that you’ve exposed the Mongo DB port:

docker run -d --name mongo-container -p 27888:27017 -e MONGO_INITDB_ROOT_USERNAME=mongoadmin -e MONGO_INITDB_ROOT_PASSWORD=secret mongo

Alternatively, DigitalOcean now offers Managed MonogDB database clusters:

https://www.digitalocean.com/products/managed-databases-mongodb/

This is a great option in case that you are looking for a hassle-free MongoDB solution.

Regards,
Bobby