Trigger edge docker release on master push (#5897)

.github/workflows/docker-edge.yml

@@ -1,21 +1,16 @@
 name: Build Edge Docker Image
 
-# Edge Docker images are built for every commit, and daily
+# Edge Docker images are built for every push to master
 on:
   push:
     branches:
       - master
-    paths:
-      - 'packages/sync-server/**'
-  pull_request:
-    branches:
-      - master
-    paths:
-      - 'packages/sync-server/**'
-  schedule:
-    - cron: '0 0 * * *'
   workflow_dispatch:
 
+concurrency:
+  group: docker-edge-build
+  cancel-in-progress: true
+
 permissions:
   contents: read
   packages: write