Update github workflow

.github/workflows/docker-image.yml

@@ -1,11 +1,15 @@
 name: Docker Image CI
 
 on:
-  push:
+  pull_request:
-    branches: [ main ]
+    types:
+      - labeled
+    branches:    
+      - 'main'
 
 jobs:
   buildx:
+    if: ${{ github.event.label.name == 'run-workflow' }}
     runs-on: ubuntu-latest
     steps:
       -
@@ -31,4 +35,4 @@ jobs:
           context: .
           platforms: linux/amd64,linux/arm/v7,linux/arm64
           push: true
-          tags: noisedash/noisedash:latest,noisedash/noisedash:${{ github.ref_name }}
+          tags: noisedash/noisedash:latest,noisedash/noisedash:${{ github.head_ref }}