build and publish a Docker image #202
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| name: build and publish a Docker image | |
| on: | |
| push: | |
| workflow_dispatch: | |
| schedule: | |
| - cron: '0 0 * * *' | |
| env: | |
| REGISTRY: ghcr.io | |
| IMAGE_NAME: ${{ github.repository }} | |
| jobs: | |
| build-and-push-image: | |
| runs-on: ubuntu-latest | |
| permissions: | |
| contents: read | |
| packages: write | |
| steps: | |
| - name: Checkout repository | |
| uses: actions/checkout@v4 | |
| - name: Check if the base image changed | |
| id: check | |
| uses: cantorgymnasium/is-my-docker-parent-image-out-of-date@main | |
| with: | |
| my-image: ghcr.io/cantorgymnasium/caddy:main | |
| parent-image: docker.io/library/caddy:2-alpine | |
| - name: Log in to the Container registry | |
| uses: docker/login-action@v3 | |
| if: github.event_name == 'push' || steps.check.outputs.out-of-date == 'true' | |
| with: | |
| registry: ${{ env.REGISTRY }} | |
| username: ${{ github.actor }} | |
| password: ${{ secrets.GITHUB_TOKEN }} | |
| - name: Extract metadata | |
| id: meta | |
| uses: docker/metadata-action@v4 | |
| if: github.event_name == 'push' || steps.check.outputs.out-of-date == 'true' | |
| with: | |
| images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }} | |
| - name: Build and push Docker image | |
| uses: docker/build-push-action@v5 | |
| if: github.event_name == 'push' || steps.check.outputs.out-of-date == 'true' | |
| with: | |
| context: . | |
| push: true | |
| tags: ${{ steps.meta.outputs.tags }} | |
| labels: ${{ steps.meta.outputs.labels }} |