To share built images, you need to configure a Docker registry where you have permissions to push images. You can share the image with others, for example, to demonstrate exactly how your application is expected to run, without the need to install the necessary runtime (only Docker is required). To see the whole process, open the Log tab in the Services tool window. IntelliJ IDEA creates a Dockerfile run configuration, which builds an image from the Dockerfile and then runs a container based on that image. In the gutter inside the Dockerfile, click and select Run on 'Docker'. As a result, you should see Hello, World! printed to the container log. Then Docker sets the current working directory to /tmp and runs java HelloWorld.

When you run a container from this image, Docker copies the contents of your project's output directory to the /tmp directory in the container (in this case, the output directory contains the main class HelloWorld.class). This Dockerfile contains instructions for building an image based on the openjdk:17 image from Docker Hub. Paste the following code into the new file:ĬOPY. In the New Java Class dialog, type HelloWorld and press Enter. To do this, in the Project tool window, right-click the src directory, point to New and click Java Class. In the New Project dialog, select New Project and name the project DockerHelloWorld.Ĭreate the main Java class file HelloWorld.java in the src directory. The sample application for this tutorial will consist of a single HelloWorld.java file, which prints Hello, World! to the console and exits.įrom the main menu, select File | New | Project. For more information, see Getting started with Docker in IntelliJ IDEA. It also shows how to share this image with others and run a Docker container from it.īefore you begin, install and run Docker, enable the Docker plugin, and connect to the Docker daemon in IntelliJ IDEA. This tutorial describes how to create a Dockerfile to build a Docker image with OpenJDK 17 and a compiled Java application.

This is called dockerizing an application. You can then run a container from that image to see how the application will run in this environment. You can use Docker to pack your compiled Java application into an image along with a specific runtime environment and any other necessary dependencies.

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