docker

Deploying a Jakarta EE application on Azure using Docker

This demo shows how you can deploy a Jakarta EE application to Azure using Docker and Azure Container Apps. The following is how you run the demo.

Setup

• You will need a GitHub account.
• You will need an Azure subscription. If you don't have one, you can get one for free for one year here.

Start Managed PostgreSQL on Azure

We will be using the fully managed PostgreSQL offering in Azure for this demo. If you have not set it up yet, please do so now.

• Go to the Azure portal.
• Select 'Create a resource'. In the search box, enter and select 'Azure Database for PostgreSQL'. Hit create.
• Create a new resource group named jakartaee-cafe-group-<your suffix> (the suffix could be your first name such as "reza"). Specify the Server name to be jakartaee-cafe-db-<your suffix> (the suffix could be your first name such as "reza"). Specify the login name to be postgres. Specify the password to be Secret123!. Click Next to go to the Networking tab.
• Enable access to Azure services and add the current client IP address.
• Create the resource. It will take a moment for the database to deploy and be ready for use.
• In the portal home, go to 'All resources'. Find and click on jakartaee-cafe-db-<your suffix>. Open the server parameters panel. Set the require_secure_transport parameter to OFF, and then hit 'Save'.

Once you are done exploring the demo, you should delete the jakartaee-cafe-group-<your suffix> resource group. You can do this by going to the portal, going to resource groups, finding and clicking on jakartaee-cafe-group-<your suffix> and hitting delete. This is especially important if you are not using a free subscription! If you do keep these resources around (for example to begin your own prototype), you should in the least use your own passwords and make the corresponding changes in the demo code.

Build and Publish the Docker Image

• You need to have Docker CLI installed and you must be signed into your Docker Hub account. To create a Docker Hub account go to https://hub.docker.com.

• Open Eclipse.

• Get the basic jakartaee-cafe application into the IDE if you have not done so already. In order to do that, go to File -> Import -> Maven -> Existing Maven Projects. Then browse to where you have this repository code in your file system and select jakartaee/jakartaee-cafe. Accept the rest of the defaults and finish.

• Do a full build of the jakartaee-cafe application via Maven by going to Right click the application -> Run As -> Maven install.

• Browse to where you have this repository code in your file system. You will now need to copy the war file to where we will build the Docker image next. You will find the war file under jakartaee/jakartaee-cafe/target. Copy the war file to docker/. Open the standalone.xml file in the docker/ directory with a text editor next. Replace occurrences of reza with <your suffix>.

• Open a terminal. Navigate to where you have this repository code in your file system. Navigate to the docker/ directory.

• Log in to Docker Hub using the docker login command:

  docker login
  

• Build the Docker image:

  docker build -t <your Docker Hub ID>/jakartaee-cafe:v1 .
  

• Test the Docker image locally:

  docker run -it --rm -p 8080:8080 <your Docker Hub ID>/jakartaee-cafe:v1
  

  The application will be available at http://localhost:8080/jakartaee-cafe/. Press Control-C to stop.

• Push the Docker image to Docker Hub:

  docker push <your Docker Hub ID>/jakartaee-cafe:v1
  

Deploy the Docker Image to Azure

• Go to the Azure portal.
• Select 'Create a resource'. In the search box, enter and select 'Container Instances'. Hit create.
• Select the resource group to be jakartaee-cafe-group-<your suffix>. Specify the container name to be jakartaee-cafe-container-<your suffix> (the suffix could be your first name such as "reza"). Select the image source to be 'Other registry'. Specify the image to be [your Docker Hub ID]/jakartaee-cafe:v1. Click next.
• Specify the DNS name label to be jakartaee-cafe-<your suffix> (the suffix could be your first name such as "reza"). Enable access to ports 8080 and 8443. Create the resource.
• In the portal, go to 'All resources'. Find and click on jakartaee-cafe-container-<your suffix>. In the overview panel, note the FQDN where the application is available.
• The application will be accessible at http://[FQDN]:8080/jakartaee-cafe. Note that it may take a few minutes for the application to be available.