Github action createing docker images

[visze]

Here is a possible solution

1. Create a workflow file in your repository (e.g., .github/workflows/docker-image.yml).

2. Define the workflow:

 name: Build and Push Docker Image on Release

 on:
   release:
     types: [published]

 jobs:
   build:
     runs-on: ubuntu-latest

     steps:
     - name: Checkout code
       uses: actions/checkout@v3

     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3

     - name: Login to Docker Hub
       uses: docker/login-action@v3
       with:
         username: ${{ secrets.DOCKERHUB_USERNAME }}
         password: ${{ secrets.DOCKERHUB_TOKEN }}

     - name: Build and push Docker image
       uses: docker/build-push-action@v6
       with:
         context: .
         push: true
         tags: user/app:${{ github.sha }}

Explanation:

• Trigger: The workflow triggers on a release event, specifically when a release is published.
• Jobs: The build job runs on the latest Ubuntu runner.
• Steps:
  • Checkout code: Uses the actions/checkout action to check out the repository.
  • Set up Docker Buildx: Uses the docker/setup-buildx-action to set up Docker Buildx.
  • Login to Docker Hub: Uses the docker/login-action to log in to Docker Hub using secrets for the username and password.
  • Build and push Docker image: Uses the docker/build-push-action to build and push the Docker image to Docker Hub. The image is tagged with the commit SHA for uniqueness.

Secrets:

• DOCKERHUB_USERNAME: Your Docker Hub username.
• DOCKERHUB_TOKEN: Your Docker Hub access token.

You can store these secrets in your GitHub repository settings under Settings > Secrets and variables > Actions.

This setup ensures that your Docker image is built and pushed to Docker Hub only when a new release is published,