[StackOverflow/docker] How to perform docker image release with maven

### ROOT CAUSE The issue arises from the need to integrate Docker image building and deployment into the Maven lifecycle, particularly during the release phase. This requires a plugin that can handle Docker operations (build, tag, push) within Maven's build phases. ### CODE FIX Use the **Maven Docker Plugin** to automate Docker image creation and pushing. Here's the fix: 1. **Add the Plugin to `pom.xml`:** ```xml com.spotify docker-maven-plugin 1.1.0 ${project.artifactId} src/main/docker/Dockerfile ${project.build.finalName}.jar package build push ``` 2. **Dockerfile Structure (example):** ```dockerfile FROM openjdk:17 COPY target/${JAR} /app.jar ENTRYPOINT ["java","-jar","/app.jar"] ``` 3. **Push Credentials (if needed):** - Set `dockerUsername` and `dockerPassword` in plugin configuration (for private registries). 4. **CI/CD Integration:** - Trigger Docker image builds and pushes during Maven's `package` phase. - Use environment variables (e.g., `DOCKER_HOST`) for CI/CD setups. **Notes:** - Ensure the Docker daemon is accessible during Maven execution. - Test the Docker build locally before deployment. - Adjust `imageName` and `Dockerfile` paths based on project structure.