Create and publish a Docker image #3
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| name: Create and publish a Docker image | |
| # Triggers the workflow on push events to the 'release' branch and version tags 'v*' | |
| on: | |
| workflow_dispatch: | |
| # Global environment variables used across all jobs | |
| env: | |
| REGISTRY: ghcr.io | |
| IMAGE_NAME: ${{ github.repository }} | |
| jobs: | |
| build-and-push-image: | |
| runs-on: ubuntu-latest | |
| # Permissions needed to read the repo and write packages to GitHub Packages | |
| permissions: | |
| contents: read | |
| packages: write | |
| steps: | |
| - name: Checkout repository | |
| uses: actions/checkout@v4 | |
| # Checks out the repository's code to the runner | |
| - name: Log in to GitHub Container Registry | |
| uses: docker/login-action@v3 | |
| with: | |
| registry: ghcr.io | |
| username: ${{ github.actor }} | |
| password: ${{ secrets.GITHUB_TOKEN }} | |
| # Logs in to GitHub Container Registry to allow pushing images | |
| - name: Set up QEMU | |
| uses: docker/setup-qemu-action@v3 | |
| - name: Set up Docker Buildx | |
| uses: docker/setup-buildx-action@v3 | |
| - name: Prepare Docker metadata | |
| id: meta | |
| uses: docker/metadata-action@v5 | |
| with: | |
| images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }} | |
| tags: | | |
| type=raw,value=latest # Always tag with 'latest' | |
| type=ref,event=tag # Tag with the version number if pushed with a tag | |
| # Generates metadata for the image, such as tags and labels | |
| - name: Build and push Docker image | |
| uses: docker/build-push-action@v5 | |
| with: | |
| context: . | |
| push: true | |
| tags: ${{ steps.meta.outputs.tags }} | |
| labels: ${{ steps.meta.outputs.labels }} | |
| # Builds the Docker image and pushes it to GitHub Packages |