container-apps-connect-multiple-apps VS jib

Dapr (Distributed Application Runtime) is a runtime that helps build resilient, stateless, and stateful microservices. Azure Container Apps offers a fully managed version of the Dapr APIs when building microservices. When you use Dapr in Azure Container Apps, you can enable sidecars to run next to your microservices that provide a rich set of capabilities. Available Dapr APIs include Service to Service calls, Pub/Sub, Event Bindings, State Stores, and Actors. There is an excellent example created by Jeff Hollan showing how multi-container communication can use direct calls as well as be proxied by Dapr. Dapr can provide mTLS, auto-retries, and additional telemetry. This example also shows how to deploy the app using GitHub Actions and Azure BICEP.

You need to build Docker images for each app. This is specific to the JHipster application used in this tutorial which uses Jib to build the images. Make sure you are logged into Docker using docker login. Navigate to each app folder (store, invoice, product) and run the following command:

JIB

It is pretty easy to do with https://github.com/GoogleContainerTools/jib.

Save yourself the dockerfile and use jib: https://github.com/GoogleContainerTools/jib/tree/master/jib-maven-plugin

I first learned about Distroless because it was the default option in Google's Jib. Jib is a Maven plugin to create Docker containers without dependency on Docker. Note that the default has changed now.

Optimize your Dockerfile by using a small base Java Image, use either Spring Boot's layers tools or Google Jib to build your docker file, and increase CPU/Memory requests and limits if you can.

In this section, we will setup the automated generation and deployment of a Docker container image. You will need a Docker Hub account and the Jib Gradle Plugin.

If you don't want to hack on your own scripts to package your app into a container, I can recommend the JIB maven plugin. A gradle version is also available.