version: '3.1' services: mongo: image: mongo:4 restart: always ports: - 27017:27017 environment: MONGO_INITDB_ROOT_USERNAME: "user" MONGO_INITDB_ROOT_PASSWORD: "pass" mongo-express: image: mongo-express restart: always ports: - 8081:8081 environment: ME_CONFIG_MONGODB_ADMINUSERNAME: "user" ME_CONFIG_MONGODB_ADMINPASSWORD: "pass" ME_CONFIG_MONGODB_URL: "mongodb://user:pass@mongo:27017/"