ci: add docker hub description

.github/workflows/release.yml

@@ -27,4 +27,19 @@ jobs:
           cd docker && \
           docker buildx build --push --platform linux/amd64,linux/arm64 --label IMAGE_URI=mbari/sdcat:$RELEASE_VERSION-cuda:12.4.1 -t mbari/sdcat-cuda:12.4.1-$RELEASE_VERSION -f Dockerfile.cuda12 . && \
           docker buildx build --push --platform linux/amd64,linux/arm64 --label IMAGE_URI=mbari/sdcat:$RELEASE_VERSION -t mbari/sdcat:$RELEASE_VERSION -f Dockerfile .
-          
+  push_readme_to_dockerhub:
+    runs-on: ubuntu-latest
+    name: Push README to Docker Hub
+    steps:
+      - name: git checkout
+        uses: actions/checkout@v2
+      - name: push README to Dockerhub
+        uses: christian-korneck/update-container-description-action@v1
+        env:
+          DOCKER_USER: ${{ secrets.DOCKERHUB_USERNAME }}
+          DOCKER_PASS: ${{ secrets.DOCKERHUB_TOKEN }}
+        with:
+          destination_container_repo: mbari/sdcat-cuda:12.4.1-$RELEASE_VERSION
+          provider: dockerhub
+          short_description: 'Sliced Detection and Clustering Analysis Toolkit 😊'
+          readme_file: 'README.md'