java-hello-world simple REST application

This application is used to demonstrate the CI/CD workflow using GitHub Actions as well as its operation in Kubernetes environment using GitOps tecniques.

Start the application with Docker

$ docker run \
    -ti \
    --rm \
    -p 8080:8080 \
    -e ENVIRONMENT=local \
    -e VERSION=latest \
    dennydgl1/java-hello-world:latest

Query the API

$ curl http://localhost/greet | jq .
{
  "message": "Hello World v.latest from host 59dfb6b554xbjj7! I'm running in local!"
}

Branching strategy

Please use the "Feature Branch" branching strategy to develop this application:

Every time a tag is pushed to origin, a CI/CD workflow starts to:

• build sources (Maven)
• test the application (JUnit)
• package the application (Maven)
• build the image (Docker)
• push the image (Docker Hub)

So for example this command:

$ export TAG=3.0 && git tag $TAG && git push origin $TAG 

tags the application as 3.0 and starts the process.

To delete a tag:

$ git tag -d $TAG && git push --delete origin $TAG