fix: setup docker buildx on exp build

.github/workflows/experimental-build.yml

@@ -1,4 +1,4 @@
-name: Experimental Build (Alpha)
+name: Experimental Build
 on:
   workflow_dispatch:
   push:
@@ -25,6 +25,9 @@ jobs:
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
       - name: Build and push
         uses: docker/build-push-action@v6
         id: build
@@ -67,6 +70,9 @@ jobs:
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
       - name: Build and push
         uses: docker/build-push-action@v6
         id: build