feat(workflow) add GA Workflow for SuperNode Docker image

- Adds a new GitHub Action Workflow for building SuperNode Docker images.
- Removes the old Client image Workflow.

Signed-off-by: Robert Steiner <robert@flower.ai>

.github/workflows/docker-client.yml → .github/workflows/docker-supernode.yml

@@ -1,19 +1,19 @@
-name: Build docker client image
+name: Build docker SuperNode image
 
 on:
   workflow_dispatch:
     inputs:
       flwr-version:
-        description: "Version of Flower"
+        description: "Version of Flower."
         required: true
         type: string
 
 permissions:
   contents: read
 
 jobs:
-  build-client-images:
-    name: Build client images
+  build-supernode-images:
+    name: Build images
     uses: ./.github/workflows/_docker-build.yml
     # run only on default branch when using it with workflow_dispatch
     if: github.ref_name == github.event.repository.default_branch
@@ -22,15 +22,14 @@ jobs:
       matrix:
         python-version: ["3.8", "3.9", "3.10", "3.11"]
     with:
-      namespace-repository: flwr/client
-      file-dir: src/docker/client
+      namespace-repository: flwr/supernode
+      file-dir: src/docker/supernode
       build-args: |
         FLWR_VERSION=${{ github.event.inputs.flwr-version }}
         BASE_IMAGE_TAG=py${{ matrix.python-version }}-ubuntu22.04
       tags: |
         ${{ github.event.inputs.flwr-version }}-py${{ matrix.python-version }}-ubuntu22.04
         ${{ github.event.inputs.flwr-version }}
-        latest
     secrets:
       dockerhub-user: ${{ secrets.DOCKERHUB_USERNAME }}
       dockerhub-token: ${{ secrets.DOCKERHUB_TOKEN }}