[docker] Update dockerhub readme (#1574)

Use solution suggested on
[dockerdocs](https://docs.docker.com/build/ci/github-actions/update-dockerhub-desc/)
to update the dockerhub description of opencue's components using the
ci/cd release workflow

.github/workflows/release-pipeline.yml

@@ -75,6 +75,14 @@ jobs:
           context: .
           push: true
 
+      - name: Docker Hub Description
+        uses: peter-evans/dockerhub-description@v4
+        with:
+          username: ${{ secrets.DOCKER_USER }}
+          password: ${{ secrets.DOCKER_PASS }}
+          repository: opencue/${{ matrix.component }}
+          readme-filepath: ./${{ matrix.component }}/README.md
+
   create_release:
     needs: preflight
     name: Create Release