Update multiarch.yml

Author: mayeut

.github/workflows/multiarch.yml

@@ -2,6 +2,9 @@ name: Deploy multi-arch images
 
 on:
   workflow_dispatch:
+  push:
+    branches:
+      - multiarch
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
@@ -13,7 +16,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Deploy
-        if: github.event_name == 'workflow_dispatch' && github.repository == 'pypa/manylinux'
+        if: github.repository == 'pypa/manylinux'
         run: ./deploy_multiarch.sh
         env:
           QUAY_USERNAME: ${{ secrets.QUAY_USERNAME }}