ghAction-Docker

Java, Spring boot, Github Action and Docker integration

• FIX gradle permission -> git update-index --chmod=+x gradlew

• access Docker hub - https://hub.docker.com/repository/create?namespace=rohitpshelar

• create repo - eg for this Project : ghAction-Docker

• Add following to Docker config to action ( ref : https://github.com/marketplace/actions/docker-build-push-action)

    - uses: mr-smithers-excellent/docker-build-push@v6
      name: Build & push Docker image
      with:
        image: rohitpshelar/ghaction-docker
        tags: v1, latest
        registry: docker.io
        dockerfile: Dockerfile.ci
        username: ${{ secrets.DOCKER_USERNAME }}
        password: ${{ secrets.DOCKER_PASSWORD }}

• Add DOCKER_USERNAME in GitHub > Settings > Actions secrets and variables > Repository secrets > New

• Create new file as Dockerfile.ci ref - Dockerfile.ci

• Add below code to this file

    From openjdk:21
    EXPOSE 8080
    RUN mkdir /app
    COPY build/libs/*.jar /app/ghAction-Docker.jar
    ENTRYPOINT ["java","-jar","/app/ghAction-Docker.jar"]

• Add below code to build.gradle

tasks.bootJar {
	archiveFileName.set("ghAction-Docker.jar")
}

• Once you commit above changes, GitHub will run the workflow and image will be sent to docker.
• This image can be pulled into local DockerDesktop with below command

docker pull rohitpshelar/ghaction-docker
docker images
docker run -p 8080:8080 rohitpshelar/ghaction-docker

• Just test it with : http://localhost:8080/

  Free Cloud deployment use https://railway.com/