fix: fixed docker login when building frontend

Author: dervoeti

.github/workflows/build_push_dev.yml

@@ -61,11 +61,12 @@ jobs:
         name: Set up Docker Buildx
         uses: docker/setup-buildx-action@6524bf65af31da8d45b59e8c27de4bd072b392f5 # v3.8.0
       -
-        name: Login to Docker Hub
+        name: Login to Stackable Harbor
         uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567 # v3.3.0
         with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
+          registry: oci.stackable.tech
+          username: robot$stackable+github-action-build
+          password: ${{ secrets.HARBOR_ROBOT_STACKABLE_GITHUB_ACTION_BUILD_SECRET }}
       -
         name: Set current date as env variable
         run: echo "CREATED=$(date +'%Y-%m-%dT%H:%M:%S')" >> $GITHUB_ENV