Adding docker image build for prometheus pipeline

.github/workflows/publish_docker_prometheus.yml

@@ -0,0 +1,75 @@
+name: Logstash Docker Images
+
+# This action builds Docker images of logstash then 
+# pushes result to GitHub Container Registry.
+
+on:
+ push:
+ branches: [ '*' ]
+ # Publish semver tags as releases.
+ tags: [ 'v*.*.*' ]
+ pull_request:
+ branches: [ 'main' ]
+
+env:
+ REGISTRY: ghcr.io
+ # github.repository as <account>/<repo>
+ IMAGE_BASE: ${{ github.repository }}
+ BUILD_DIR: perfsonar-logstash/perfsonar-logstash
+ IMAGE_SUBNAME: prometheus
+
+jobs:
+ build:
+ runs-on: ubuntu-latest
+ permissions:
+ contents: read
+ packages: write
+ # This is used to complete the identity challenge
+ # with sigstore/fulcio when running outside of PRs.
+ id-token: write
+
+ steps:
+ - name: Checkout repository
+ uses: actions/checkout@v3
+
+ - name: Set up QEMU
+ uses: docker/setup-qemu-action@v2
+
+ - name: Setup Docker buildx
+ uses: docker/setup-buildx-action@v2
+
+ # Login against a Docker registry except on PR
+ # https:/docker/login-action
+ - name: Log into registry ${{ env.REGISTRY }}
+ if: github.event_name != 'pull_request'
+ uses: docker/login-action@v2
+ with:
+ registry: ${{ env.REGISTRY }}
+ username: ${{ github.actor }}
+ password: ${{ secrets.GITHUB_TOKEN }}
+
+ # Extract metadata (tags, labels) for Docker
+ # https:/docker/metadata-action
+ - name: Extract Docker metadata
+ id: meta
+ uses: docker/metadata-action@98669ae865ea3cffbcbaa878cf57c20bbf1c6c38
+ with:
+ images: ${{ env.REGISTRY }}/${{ env.IMAGE_BASE }}-${{ env.IMAGE_SUBNAME }}
+ tags: |
+ type=schedule
+ type=ref,event=branch
+ type=ref,event=tag
+ type=ref,event=pr
+ type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'main') }}
+
+ # Build and push Docker image with Buildx (don't push on PR)
+ # https:/docker/build-push-action
+ - name: Build and push Docker images
+ id: build-and-push
+ uses: docker/build-push-action@v3
+ with:
+ context: ${{ env.BUILD_DIR }}
+ file: ${{ env.BUILD_DIR }}/docker/Dockerfile-${{ env.IMAGE_SUBNAME }}
+ push: ${{ github.event_name != 'pull_request' }}
+ tags: ${{ steps.meta.outputs.tags }}
+ labels: ${{ steps.meta.outputs.labels }}