Create Dockerfile for mongoDB 4.2 with authentication - mongodb

Question

how would you script the Dockerfile to create admin user for mongoDB 4.2 ?
Is there a one line command to create admin users not using an interactive subshell ? (didn't see any in mongoDB documentation)
Thanks for your help.
Passing MONGO_INITDB_ROOT_USERNAME and MONGO_INITDB_ROOT_PASSWORD does not work anymore (removed from Docker hub mongo image documentation).
The mongo Docker hub documentation only shows interactive shell admin user creation.
> mongo admin
executes mongo interactive shell but how do you write a shell script to enter commands in that subshell from the top level shell ?
FROM mongo
RUN mongo admin ???? db.createUser({ user: 'jsmith', pwd: 'some-initial-password', roles: [ { role: "userAdminAnyDatabase", db: "admin" } ] });
The docker build process should display:
Successfully added user: {
"user" : "jsmith",
"roles" : [
{
"role" : "userAdminAnyDatabase",
"db" : "admin"
}
]
}

Answer 1

OK, here's the way to add authetication via the Dockerfile.
create a init.js file:
db = new Mongo().getDB("admin");
// create admin user
db.createUser({
user: "admin",
pwd: "password",
roles: [
{
role: "clusterAdmin",
db: "admin"
}
]
});
// create non admin user
db.createUser({
user: "toto",
pwd: "123",
roles: [
{
role: "readWrite",
db: "tube"
}
]
});
create the Dockerfile:
FROM mongo
# init.js will be executed when the mongo instance runs
COPY ./init.js ./docker-entrypoint-initdb.d
build your docker image
docker build -t mongoAuth .
run the container (attached mode to see the logs)
docker run --name mongoContainer -p 27017:27017 mongoAuth
What I was missing was that I didn't set the database on which to create the users (admin database) by using:
db = new Mongo().getDB("admin");