Command subjects #79
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| name: Create and publish a Docker image | |
| # Configures this workflow to run every time a change is pushed or a pull request is merged to the branch called `main`. | |
| on: | |
| push: | |
| branches: | |
| - 'main' | |
| pull_request: | |
| branches: | |
| - 'main' | |
| # Defines two custom environment variables for the workflow. | |
| env: | |
| REGISTRY: ghcr.io | |
| IMAGE_NAME: ${{ github.repository }} | |
| jobs: | |
| build-and-push-image: | |
| runs-on: ubuntu-latest | |
| # Sets the permissions granted to the `GITHUB_TOKEN` for the actions in this job. | |
| permissions: | |
| contents: read | |
| packages: write | |
| steps: | |
| - name: Checkout repository | |
| uses: actions/checkout@v4 | |
| - name: Log in to the Container registry | |
| uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1 | |
| with: | |
| registry: ${{ env.REGISTRY }} | |
| username: ${{ github.actor }} | |
| password: ${{ secrets.GITHUB_TOKEN }} | |
| # This step uses [docker/metadata-action](https://github.com/docker/metadata-action#about) to extract tags and labels that will be applied to the specified image. | |
| # The `images` value provides the base name for the tags and labels. | |
| # The `flavor` value sets that all the builds receive the latest tag (else this would only happen on push tag) | |
| - name: Extract metadata (tags, labels) for Docker | |
| id: meta | |
| uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7 | |
| with: | |
| images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }} | |
| flavor: latest=true | |
| - name: Set up Docker Buildx | |
| uses: docker/setup-buildx-action@v2 | |
| # This step uses the `docker/build-push-action` action to build the image, based on your repository's `Dockerfile`. If the build succeeds, it pushes the image to GitHub Packages. | |
| # It uses the `context` parameter to define the build's context as the set of files located in the specified path. | |
| # For more information, see "[Usage](https://github.com/docker/build-push-action#usage)" in the README of the `docker/build-push-action` repository. | |
| # It uses the `tags` and `labels` parameters to tag and label the image with the output from the "meta" step. | |
| - name: Build and push Docker image | |
| uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4 | |
| with: | |
| context: . | |
| push: ${{ github.event_name == 'push' }} | |
| tags: ${{ steps.meta.outputs.tags }} | |
| labels: ${{ steps.meta.outputs.labels }} | |
| cache-from: type=gha | |
| cache-to: type=gha,mode=max |