A Docker application which consists of multiple containers(sample-maven-app and MySQL). It uses docker-compose capabilities to bring up or down both the container together and setup a network to allow the containers communicate with each other. A maven application running on one container will connect to MySQL database running on another container.
It is maven project which consist of an App Java class. It tries to connect to MySQL database.
Dockerfile description:
- Uses Ubuntu 18.04 as a base image.
- Installs Java 11 and sets environment path
- Installs maven
- Builds project and generate an executable jar file with the help of maven assembly plugin
- Then it executes java -jar command to run jar sample-maven-app jar file
Docker compose file defines MySQL and sample-maven-app services. Following are the commands to use docker-compose:
docker-compose buildbuilds/rebuilds images for mysql and sample-maven-appdocker-compose up -dto bring up application. Docker compose creates a network which can be used by containers to communicate with each other.docker-compose downto bring down the app