chore: basic implementation with healthz

Author: tonitienda

.github/workflows/build-run-test.yaml

@@ -41,6 +41,9 @@ jobs:
       - name: Push Docker image
         run: |
           docker push ghcr.io/${{ github.repository_owner }}/kadai/${{ matrix.service }}:${GITHUB_SHA}
+      - name: Check Docker image details:
+        run: |
+          docker manifest inspect  ghcr.io/${{ github.repository_owner }}/kadai/${{ matrix.service }}:${GITHUB_SHA}
   system:
     runs-on: ubuntu-latest
     needs: build