@Per0x @evgenymagata ,

It's typical to mount a volume for your DB so the data persists. I typically use docker-compose as it's easier to execute and maintain. I was able to get this working but I had to modify a docker-compose file and modify the mongod configuration file change in the container to enable mongodb authentication.

I'm currently evaluating nodebb and discourse for use by a client. The config change I made won't be persistent as I modified the file in the running container. That's obviously not the correct way to solve the problem.

In case it's helpful, here's the docker-compose I used:
version: '3.5'

services:
node:
image: nodebb/docker
restart: unless-stopped
depends_on:
- db
ports:
- "4567:4567"

db:
image: mongo:bionic
restart: unless-stopped
ports:
- "27017:27017"
environment:
MONGO_INITDB_ROOT_USERNAME: root
MONGO_INITDB_ROOT_PASSWORD: root
volumes:
- bbdata:/data/db

volumes:
bbdata:

And here's a link that helps understand the mongod.conf file changes:

Stampery Inc. / Jun 8, 2018

How to Enable Authentication on MongoDB

Learn how to properly configure the most important and fundamental security feature that comes with MongoDB

Additionally, when running the web installer for nodebb, you'll need to tell it the database is at the host specified in the docker-compose (e.g. 'db'), not localhost.

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