Docker Node MongoDB AuthenticationFailed: SCRAM-SHA-1 authentication failed, storedKey mismatch - node.js

Question

I am posting it here as I am run out of options.
I am trying to make a connection from my node app to the mongodb.
I am getting AuthenticationFailed: SCRAM-SHA-1 authentication failed, storedKey mismatch
My local environment works 100%. I dumped my local MongoDB (the app database and admin too) into the docker container.
I created my docker-compose.yml as below:
version: "1.0"
services:
mongodb:
image: mongo:3.4.7
container_name: MongoDB2
restart: unless-stopped
ports:
- '27017:27017'
app:
links:
- mongodb
depends_on:
- mongodb
image: eamello/gsd:myCore
ports:
- '8087:8087'
stdin_open: true
tty: true
volumes:
db:
networks:
node-webapp-network:
driver: bridge
My config.json file, which has the database connection details:
"myCore": {
"database": {
"url": "mongodb://mongodb:27017/myCore",
"options": {
"db": {
"native_parser": true
},
"server": {
"poolSize": 100,
"socketOptions": {
"keepAlive": 1000,
"connectTimeoutMS": 30000
}
},
"replset": {},
"user": "myAdmin",
"pass": "/WnUU5Jqithypb9970AfIQ==",
"auth": {
"authdb": "admin"
},
"queryLevel":{
"common":{
"maxTimeMS": 15000
}
}
}
},
I am 100% sure the user created in my admin database has the same password.
I check and rechecked several times.
I also tried to add my user via javascript file... it looks like the javascript was never executed.
db.createUser(
{
user: "myAdmin",
pwd: "/WnUU5Jqithypb9970AfIQ==",
roles: [
{
role: "userAdmin", db: "myCore"
},
{
role: "readWrite", db: "myCore"
}
]
}
);
As I can manage my MongoDB via Compass, I left this javascript aside.
Does anyone have any clue why I am getting AuthenticationFailed: SCRAM-SHA-1 authentication failed, storedKey mismatch?
I changed some names above as this is a company issue. Thanks.