Using Maven Docker Plugin to Build, Run, and Push Docker Images for Spring Boot Applications

This article demonstrates how to use the spotify/docker-maven-plugin to build, run, and push Docker images for a Spring Boot application.

Prerequisites include Ubuntu 17.04, Docker 17.12.0‑ce installed, and the plugin available at GitHub .

Simple usage: add the plugin to pom.xml, configure <imageName>, <dockerDirectory>, and resource mapping, then execute mvn clean package docker:build to create the image. Run it with

docker run --name MySpringBootMavenPlugin -d -p 8080:80 docker-spring-boot-demo-maven-plugin

and access the service at http://HOST_IP:8080.

Using a Dockerfile: create a Dockerfile in src/main/resources with FROM java:8, VOLUME /tmp, ADD the built jar, RUN touch /app.jar, EXPOSE 9000, and an ENTRYPOINT. Update the plugin configuration to point <dockerDirectory> to the resources folder and include the jar.

Pushing to DockerHub: add Docker Hub credentials to Maven settings.xml, create a repository on DockerHub, set <imageName> to match the repository, and add <serverId>docker-hub</serverId> and

<registryUrl>https://index.docker.io/v1/</registryUrl>

. Build and push with mvn clean package docker:build -DpushImage.

Binding to a Maven phase: define an <execution> with <phase>package</phase> and <goal>build</goal> so that mvn package automatically builds the Docker image.