Add GitHub Actions workflow for DockerHub push

.github/workflows/docker-push-containers-to-dockerhub.yaml

@@ -0,0 +1,45 @@
+name: Docker push containers to dockerhub
+
+on:
+  push:
+    tags:
+      - "[0-9]+.[0-9]+.[0-9]+"
+
+permissions: {}
+
+jobs:
+  docker-push-containers-to-dockerhub:
+    outputs:
+      status: ${{ job.status }}
+    permissions:
+      attestations: write
+      contents: write
+      id-token: write
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+
+    steps:
+      - name: Get repository name
+        id: repo-basename
+        run: |
+          echo "repo=$(basename ${{ github.repository }})" >> "$GITHUB_OUTPUT"
+        shell: bash
+
+      - name: Build docker image and push to DockerHub
+        uses: senzing-factory/github-action-docker-buildx-build@v2
+        with:
+          image-repository: senzing/${{ steps.repo-basename.outputs.repo }}
+          image-tag: ${{ github.ref_name }}
+          password: ${{ secrets.DOCKERHUB_ACCESS_TOKEN }}
+          push: true
+          sign-image: true
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+
+  slack-notification:
+    needs: [docker-push-containers-to-dockerhub]
+    if: ${{ always() && contains(fromJSON('["failure", "cancelled"]'), needs.docker-push-containers-to-dockerhub.outputs.status) }}
+    secrets:
+      SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}
+    uses: senzing-factory/build-resources/.github/workflows/build-failure-slack-notification.yaml@v3
+    with:
+      job-status: ${{ needs.docker-push-containers-to-dockerhub.outputs.status }}