Dockerhub-Build-Push

Introduction

The GitHub Action is used to build Docker images and upload them to docker hub.

• docker.io repository

Example of Workflow

Create the following yml file, with any file name, using the configuration reference as follows: .github/workflows/xxxx.yml :

name: Docker Build And Push To Docker Hub

on:
  push:
    branches:
      - master

jobs:
  build:
    name: Build Spring Boot
    runs-on: ubuntu-latest
    steps:
      - name: Git Checkout Code
        uses: actions/checkout@v1
        id: git_checkout

      - name: Set up JDK 12.0
        uses: actions/setup-java@v1
        with:
          java-version: 12.0

      - name: Build with Gradle
        run: ./gradlew build

      - name: Build Docker Image
        id: buildAndPushImage
        uses: abhishek-070/docker-image-build-push-action@v1.0
        with:
          registry_url: 'docker.io'
          repository_name: 'demo-app'
          user_name: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
          image_version: 'v1.0'
          docker_file: '.'
      - name: Get pre step result output image_pull_url
        run: echo "The time was ${{ steps.buildAndPushImage.outputs.image_pull_url }}"

Set registry_url、repository_name、user_name、password for uploading image to docker hub. For username and password set github secrets so that credentials are not exposed. You can use ${{ secrets.DOCKERHUB_USERNAME }} ${{ secrets.DOCKERHUB_TOKEN }} as github secret keys。 For docker hub password generate access token. Ref. Settings

Description

The following parameters can be found in the docker hub documentation

Parameter	Required	Description
registry_url	Yes	Docker hub registry，eg: docker.io
repository_name	Yes	Docker hub target repository name
user_name	Yes	Docker hub username
password	Yes	Docker hub access token
image_version	Yes	Docker image tag
docker_file	No	Context directory, default is（.）

Output parameters

After the script is executed, use following parameter for docker pull.

Parameter	Description
image_pull_url	The pull address returned after the successful upload of the image, eg: Use example: docker.io/abhishek-070/demo-app:v1.0 command: docker pull ${{ steps.<steps.id>.outputs.image_pull_url }}