Getting Started

./gradlew build

./gradlew bootRun

or

docker build -t gradle-demo .

docker run -p 8080:8080 gradle-demo

http://localhost:8080/test

CI/CD using GitHub Actions

This GitHub Actions workflow (on main branch):

• sets up an environment with JDK 11,
• builds a Java application using Gradle,
• creates a JAR file,
• uploads it as an artifact,
• retrieves the latest Docker image version from the private GitHub Container Registry,
• increments the version based on a VARIABLE on GITHUB,
• then builds and pushes a Docker image to the private GitHub Container Registry.

Preconditions

• define DOCKER_PAT as a secret to access GitHub Container Registry
• define SEM_VER_INCREMENT as a variable with setting one of the value (MAJOR, MINOR or PATCH)

Resources:

1. https://docs.github.com/en/actions/using-jobs/defining-outputs-for-jobs
2. https://github.com/actions/upload-artifact
3. https://github.com/actions/download-artifact
4. GitHub Actions Tutorial - Basic Concepts and CI/CD Pipeline with Docker