mongo-tutorial.txt

When creating a docker mongodb container we must implement two steps to enhance security.

1. Authentication: we need to put some auth security when creating the docker container. Either in docker-compose or dockerfile.
What I did: In docker-compose, when adding an env file, this file needs to have 3 env variables: MONGO_INITDB_ROOT_USERNAME, MONGO_INITDB_ROOT_PASSWORD, MONGO_INITDB_DATABASE

2. Seeding and creating some database: after creating the container, it would be great to have some databases, collections and data so the app can use them.
What I did: Create a script file (.sh) which is going to be executed inmediately by the container after being up. 
Using mongoimport command on the OS cli (container linux OS): 
mongoimport --authenticationDatabase=$MONGO_INITDB_DATABASE -u=$MONGO_INITDB_ROOT_USERNAME -p=$MONGO_INITDB_ROOT_PASSWORD -d=<database> -c=<collection> --file=<filepath>
* we can add --drop to erase any old collection and --jsonArray if we have an array of documents (array of js objects/dictionaries)