Hands-On Microservices with Spring Boot and Spring Cloud

The Docker Compose configuration

MongoDB and MySQL are declared as follows in the Docker Compose configuration file, docker-compose.yml:

mongodb:  image: mongo:3.6.9  mem_limit: 350m  ports:    - "27017:27017"  command: mongod --smallfilesmysql:  image: mysql:5.7  mem_limit: 350m  ports:    - "3306:3306"  environment:    - MYSQL_ROOT_PASSWORD=rootpwd    - MYSQL_DATABASE=review-db    - MYSQL_USER=user    - MYSQL_PASSWORD=pwd  healthcheck:    test: ["CMD", "mysqladmin" ,"ping", "-uuser", "-ppwd", "-h", "localhost"]    interval: 10s    timeout: 5s    retries: 10

The following is observed from the preceding code:

1. We will use the official Docker image for MongoDB V3.6.9 and MySQL 5.7 and forward their default ports 27017 and 3306 to the Docker host, also made available on localhost ...