Get/set docker image tag for otelcolarrow from build config

.github/workflows/publish-image.yml

@@ -17,7 +17,6 @@ jobs:
     permissions:
       contents: read
       packages: write
-      # 
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
@@ -28,13 +27,21 @@ jobs:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Read build config YAML and read/set otelcol version
+        id: read-yaml
+        run: |
+          # Parse the YAML file and extract the otelcol version
+          OTELCOL_VERSION=$(yq -r '.dist.otelcol_version' otelcolarrow-build.yaml)
+          echo "OTELCOL_VERSION=${OTELCOL_VERSION}" >> $GITHUB_ENV
       # 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 `id` "meta" allows the output of this step to be referenced in a subsequent step. The `images` value provides the base name for the tags and labels.
       - name: Extract metadata (tags, labels) for Docker
         id: meta
         uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}-EXPERIMENTAL
           tags: |
+            # Set the OTELCOL_VERSION here
+            echo "::set-output name=otelcol-version-tag::${OTELCOL_VERSION}"
             # set latest tag for master branch
             type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'main') }}
       # 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.
@@ -46,4 +53,4 @@ jobs:
           context: ./arrow
           push: true
           tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
+          labels: ${{ steps.meta.outputs.labels }}