If you have used Maven to resolve dependencies but the Maven provides support to create a build by adding some plugins to the Maven configuration file pom.xml. So, if you want to create a Docker image by using the Maven commands, you have to add a new plugin in the Maven pom.xml file. Consider the following:

<properties> 
   ... 
   <docker.image.prefix>doj</docker.image.prefix> 
</properties> 
 
<build> 
   <plugins> 
         <plugin> 
               <groupId>com.spotify</groupId> 
               <artifactId>dockerfile-maven-plugin</artifactId> 
               <version>1.3.4</version> 
               <configuration> 
                     <repository>${docker.image.prefix}/${project.artifactId}</repository> 
                     <buildArgs> 
                           <JAR_FILE>target/${project.build.finalName}.jar</JAR_FILE> 
                     </buildArgs> 
               </configuration> 
         </plugin> 
         ... 
   </plugins> 
</build>  
 

As you can see in the preceding Maven pom.xml file, we have configured a new plugin with groupId com.spotify and artifactId dockerfile-maven-plugin with the following two configurations:

• The repository with the image name, which will end up here as doj/account-account-service
• The name of the JAR file, exposing the maven configuration as a build argument for Docker

Now you can use the following Maven command to build a Docker image:

$ ./mvnw install dockerfile:build

You can also push this Docker image to Docker Hub using the following command:

./mvnw dockerfile:push

Similarly, you can use Gradle to build a Docker image using the Gradle build command.

Now let's move on and discuss Docker Compose in the next section.