docker network create mongo-network

docker run -d
-p 27017:27017
-e MONGO_INITDB_ROOT_USERNAME=admin
-e MONGO_INITDB_ROOT_PASSWORD=password
--net mongo-network
--name mongodb
mongo

docker run -d
-p 8081:8081
-e ME_CONFIG_MONGODB_ADMINUSERNAME=admin
-e ME_CONFIG_MONGODB_ADMINPASSWORD=password
-e ME_CONFIG_MONGODB_SERVER=mongodb
--net mongo-network
--name mongo-express
mongo-express