Image update check #364
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| # FILE LOCATION IN REPOSITORY: | |
| # | |
| # .github/workflows/auto-build-on-base-image-change.yml | |
| # | |
| name: Image update check | |
| on: | |
| schedule: | |
| - cron: "0 23 * * *" | |
| workflow_dispatch: | |
| inputs: | |
| force_build: | |
| description: 'Force docker image build.' | |
| default: false | |
| required: false | |
| type: boolean | |
| jobs: | |
| check-build: | |
| runs-on: ubuntu-latest | |
| steps: | |
| # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it | |
| - uses: actions/checkout@v4 | |
| - name: Pull the latest base image | |
| run: docker pull pihole/pihole:latest | |
| - name: Check if the base image has been updated | |
| run: | | |
| LATEST_DIGEST=$(docker inspect --format='{{index .RepoDigests 0}}' pihole/pihole:latest) | |
| echo "LATEST_DIGEST=$LATEST_DIGEST" >> $GITHUB_ENV | |
| echo "BASE_IMAGE_UPDATED=false" >> $GITHUB_ENV | |
| if [[ "$LATEST_DIGEST" != "${{ vars.BASE_IMAGE_DIGEST }}" ]]; then | |
| echo "Base image has been updated!" | |
| echo "BASE_IMAGE_UPDATED=true" >> $GITHUB_ENV | |
| else | |
| echo "Base image has NOT been updated." | |
| fi | |
| # only execute subsequent steps if an update is actually NEEDED. | |
| # unfortunately we need to add an if-condition to all steps now | |
| # because a clean exit can't be triggered within a job it seems | |
| # (a cancellation is NOT the same and triggers a failure email) | |
| # see also https://github.com/actions/runner/issues/662 | |
| - name: Login to DockerHub | |
| uses: docker/login-action@v3 | |
| with: | |
| username: ${{ secrets.DOCKERHUB_USERNAME }} | |
| password: ${{ secrets.DOCKERHUB_TOKEN }} | |
| if: ${{ env.BASE_IMAGE_UPDATED == 'true' || github.event.inputs.force_build == 'true' }} | |
| - name: Build and push Docker images | |
| uses: docker/build-push-action@v5 | |
| with: | |
| context: "${{ github.workspace }}" | |
| push: true | |
| tags: phynias/pihole-regex:latest # update for your image | |
| if: ${{ env.BASE_IMAGE_UPDATED == 'true' || github.event.inputs.force_build == 'true' }} | |
| - name: Update digest var | |
| run: | | |
| gh variable set BASE_IMAGE_DIGEST --body "${{ env.LATEST_DIGEST }}" | |
| gh variable list | |
| env: | |
| GITHUB_TOKEN: ${{ secrets.PAT }} | |
| if: ${{ env.BASE_IMAGE_UPDATED == 'true' || github.event.inputs.force_build == 'true' }} | |