How to use Github actions to build your image automatically

Create a New Repository on GitHub

1. Go to GitHub and log in to your account.
2. Click the + icon in the top right corner and select New repository.
3. Fill out the repository name and description, then click Create repository.

Add GitHub as a Remote

Add your newly created GitHub repository as a remote:

git remote add github https://github.com/username/repository-name.git

Create a GitHub Personal Access Token:

1. Go to GitHub Personal Access Tokens.
2. Click Generate new token.
3. Add a note, select the repo scope for full control of private repositories, and any other necessary scopes.
4. Click Generate token and copy the token. This will be used as your GitHub authentication token.

Push Your Repository to GitHub

Push your repository’s branches to GitHub:

git push github --all

Create a GitHub Action to Build and Push Docker Images

In your GitHub repository, create the necessary directory for GitHub Actions workflows:

mkdir -p .github/workflows

Create a new file in the .github/workflows directory, e.g., build-and-push.yml:

name: Build and push docker image to Docker Hub

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

  workflow_dispatch:

jobs:
  docker:
    runs-on: ubuntu-latest
    steps:
      -
        name: Checkout
        uses: actions/checkout@v4
      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
      -
        name: Login to DockerHub
        uses: docker/login-action@v2 
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      - 
        name: Docker meta
        id: docker_meta
        uses: crazy-max/ghaction-docker-meta@v2
        with:
          images: ${{ secrets.DOCKERHUB_USERNAME }}/slat
          tags: |
            type=sha
            type=semver,pattern={{raw}}
            type=ref,event=branch
      - 
        name: Build & Push image
        uses: docker/build-push-action@v2
        with:
          context: .
          file: Dockerfile
          push: true
          tags: ${{ steps.docker_meta.outputs.tags }}
          labels: ${{ steps.docker_meta.outputs.labels }}

Add Secrets to Your GitHub Repository:

• Go to your GitHub repository and navigate to Settings.
• Select Secrets and variables → Actions.
• Click New repository secret and add the following secrets:
• DOCKERHUB_USERNAME: Your Docker Hub username.
• DOCKERHUB_PASSWORD: Your Docker Hub password or access token.

Commit and Push the Workflow File

Add, commit, and push the workflow file to your GitHub repository:

git add .github/workflows/build-and-push.yml
git commit -m "Add GitHub Actions workflow for Docker build and push"
git push