chore: explicitly separate testing and stable builds

.github/workflows/build-testing.yml

@@ -1,6 +1,16 @@
 name: build-testing
 on:
   push:
+    branches: ['testing']
+    branches-ignore: ['main']
+  pull_request:
+    branches: ['testing']
+    branches-ignore: ['main'] 
+  merge_group: 
+    branches: ['testing']
+    branches-ignore: ['main'] 
+  schedule:
+    - cron: '0 5 * * *'  # 5 am everyday
   workflow_dispatch:  
 env:
     IMAGE_NAME: bling-testing

.github/workflows/build.yml

@@ -1,10 +1,14 @@
 name: build-stable
 on:
   pull_request:
-  merge_group:  
+    branches: ['main']
+    branches-ignore: ['testing'] 
+  merge_group: 
+    branches: ['main']
+    branches-ignore: ['testing'] 
   schedule:
     - cron: '0 5 * * *'  # 5 am everyday
-  workflow_dispatch:  
+  workflow_dispatch: 
 env:
     IMAGE_NAME: bling
     IMAGE_REGISTRY: ghcr.io/${{ github.repository_owner }}