fix gh actions

Author: josefhandl

.github/workflows/docker-build-push.yaml

@@ -22,7 +22,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Log in to Docker registry
-        run: echo "${{ secrets.REGISTRY_TOKEN }}" | docker login ${{ secrets.REGISTRY_URL }} -u "${{ secrets.REGISTRY_USERNAME }}" --password-stdin
+        run: echo "${{ secrets.REGISTRY_TOKEN }}" | docker login ${{ secrets.REGISTRY_URL }} -u '${{ secrets.REGISTRY_USERNAME }}' --password-stdin
 
       - name: Build Docker image
         run: docker build -t ${{ secrets.REGISTRY_URL }}/${{ env.IMAGE_NAME }}:latest .