Update validate.yml

.github/workflows/validate.yml

@@ -1,4 +1,4 @@
-on: ['pull_request']
+on: ['pull_request', 'push']
 
 name: Build & Validate Image
 
@@ -39,4 +39,4 @@ jobs:
       - name: Delete Image
         id: delete_image
         run: |
-          rm ${{ env.working-directory }}/deploy/${{ steps.builder.outputs.filename }}
+          rm ${{ env.working-directory }}/deploy/${{ steps.builder.outputs.filename }}