I am maybe planning to deploy NodeBB with a Docker image into Zeit Now service for free. Regarding the NodeBB connection with the database (MongoDB/Redis), Zeit Now recommends always running the database externally (in my case would be MongoDB Atlas), as I also think it should be. So, is that possible? Can I link or connect the deployed Docker image with an external database? I think the NodeBB Docker image includes the database itself, no? It is all integrated. So this won't work fine.
Can anyone explain me how it works exactly? I am new in cloud deployment and Docker/Kubernetes containerization. I am used to DigitalOcean Linux Virtual Machine (VPS Web Hosting).