docker_metadata_action.yml

# This workflow will perform a test whenever there
# is some change in code done to ensure that the changes
# are not buggy and we are getting the desired output.
name: Build with docker/metadata-action
on:
  push:
  pull_request:
  workflow_dispatch:
  schedule:
    - cron: '0 0 * * *'  # every day at midnight

jobs:
  build-containerfile:
    name: Build image with Containerfile
    runs-on: ubuntu-22.04
    strategy:
      fail-fast: false
      matrix:
        install_latest: [ true, false ]

    env:
      IMAGE_NAME: "hello-world"

    steps:

      # Checkout buildah action github repository
      - name: Checkout Buildah action
        uses: actions/checkout@v4

      - name: Docker Metadata
        id: docker-metadata
        uses: docker/metadata-action@v4
        with:
          images: |
            ${{ env.IMAGE_NAME }}
          tags: |
            type=edge
            type=sha
            type=ref,event=branch
            type=ref,event=pr
            type=schedule
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}},enable=${{ !startsWith(github.ref, 'refs/tags/v0.') }}

      - name: Install latest buildah
        if: matrix.install_latest
        run: |
          bash .github/install_latest_buildah.sh

      - name: Create Dockerfile
        run: |
          cat > Containerfile<<EOF
          FROM busybox
          RUN echo "hello world"
          EOF

      # Build image using Buildah action
      - name: Build Image
        id: build_image
        uses: ./
        with:
          layers: false
          tags: ${{ steps.docker-metadata.outputs.tags }}
          labels: ${{ steps.docker-metadata.outputs.labels }}
          containerfiles: |
            ./Containerfile
          extra-args: |
            --pull

      - name: Echo Outputs
        run: |
          echo "Image: ${{ steps.build_image.outputs.image }}"
          echo "Tags: ${{ steps.build_image.outputs.tags }}"
          echo "Tagged Image: ${{ steps.build_image.outputs.image-with-tag }}"

      # Check if image is build
      - name: Check images created
        run: buildah images | grep '${{ env.IMAGE_NAME }}'

      - name: Check image metadata
        run: |
          set -x
          buildah inspect ${{ steps.build_image.outputs.image-with-tag }} | jq '.OCIv1.config.Labels."org.opencontainers.image.title"'
          buildah inspect ${{ steps.build_image.outputs.image-with-tag }} | jq '.OCIv1.config.Labels."org.opencontainers.image.description"'
          buildah inspect ${{ steps.build_image.outputs.image-with-tag }} | jq '.Docker.config.Labels."org.opencontainers.image.title"'
          buildah inspect ${{ steps.build_image.outputs.image-with-tag }} | jq '.Docker.config.Labels."org.opencontainers.image.description"'

  build-scratch:
    name: Build image without Containerfile
    runs-on: ubuntu-22.04
    strategy:
      fail-fast: false
      matrix:
        install_latest: [ true, false ]

    env:
      PROJECT_DIR: spring-petclinic
      IMAGE_NAME: spring-petclinic
      MVN_REPO_DIR: ~/.m2/repository

    steps:

      # Checkout buildah action github repository
      - name: Checkout Buildah action
        uses: actions/checkout@v4

      - name: Docker Metadata
        id: docker-metadata
        uses: docker/metadata-action@v4
        with:
          images: |
            ${{ env.IMAGE_NAME }}
          tags: |
            type=edge
            type=sha
            type=ref,event=branch
            type=ref,event=pr
            type=schedule
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}},enable=${{ !startsWith(github.ref, 'refs/tags/v0.') }}

      - name: Install latest buildah
        if: matrix.install_latest
        run: |
          bash .github/install_latest_buildah.sh

      # Checkout spring-petclinic github repository
      - name: Checkout spring-petclinic project
        uses: actions/checkout@v4
        with:
          repository: "spring-projects/spring-petclinic"
          path: ${{ env.PROJECT_DIR }}

      # Setup java.
      - name: Setup Java
        uses: actions/setup-java@v3
        with:
          distribution: 'temurin'
          java-version: '17'
          cache: 'maven'

      # Run maven to build the project
      - name: Maven
        working-directory: ${{ env.PROJECT_DIR }}
        run: |
          mvn package -ntp -B

      # Build image using Buildah action
      - name: Build Image
        id: build_image
        uses: ./
        with:
          tags: ${{ steps.docker-metadata.outputs.tags }}
          labels: ${{ steps.docker-metadata.outputs.labels }}
          base-image: 'registry.access.redhat.com/openjdk/openjdk-11-rhel7'
          # To avoid hardcoding a particular version of the binary.
          content: |
            ./spring-petclinic/target/spring-petclinic-*.jar
          entrypoint: |
            java
            -jar
            spring-petclinic-*.jar
          port: 8080
          arch: amd64
          workdir: "."

      - name: Echo Outputs
        run: |
          echo "Image: ${{ steps.build_image.outputs.image }}"
          echo "Tags: ${{ steps.build_image.outputs.tags }}"
          echo "Tagged Image: ${{ steps.build_image.outputs.image-with-tag }}"

      # Check if image is build
      - name: Check images created
        run: buildah images | grep '${{ env.IMAGE_NAME }}'

      - name: Check image metadata
        run: |
          set -x
          buildah inspect ${{ steps.build_image.outputs.image-with-tag }} | jq '.OCIv1.config.Labels."org.opencontainers.image.title"'
          buildah inspect ${{ steps.build_image.outputs.image-with-tag }} | jq '.OCIv1.config.Labels."org.opencontainers.image.description"'
          buildah inspect ${{ steps.build_image.outputs.image-with-tag }} | jq '.Docker.config.Labels."org.opencontainers.image.title"'
          buildah inspect ${{ steps.build_image.outputs.image-with-tag }} | jq '.Docker.config.Labels."org.opencontainers.image.description"'