export DB             ={{your_value_here}}
export MONGO_HOST     ={{your_value_here}}
export MONGO_PORT     ={{your_value_here}}
export ADMIN_USER     ={{your_value_here}}
export ADMIN_PASSWORD ={{your_value_here}}
export USER           ={{your_value_here}}
export USER_PASSWORD  ={{your_value_here}}

mongo $DB --host $MONGO_HOST --port $MONGO_PORT -u $ADMIN_USER -p $ADMIN_PASSWORD --authenticationDatabase admin --eval \
"db.createUser({user: '$USER',pwd: '$USER_PASSWORD', roles: [ { role: 'dbOwner', db: '$DB' } ]});"