Add setup-buildx-action to CD image build workflow (#6)

Author: shokkunrf

.github/workflows/cd-images.yml

@@ -64,6 +64,9 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
       - name: Log in to GHCR
         uses: docker/login-action@v3
         with: