ci: improve GitHub Actions Docker build workflow

.github/workflows/docker.yml

@@ -3,16 +3,8 @@ name: Build and Publish Docker Image
 on:
   workflow_dispatch:
   push:
-    branches:
-      - main
-      - master
-      - dev
     tags:
       - 'v*'
-  pull_request:
-    branches:
-      - main
-      - master
 
 env:
   REGISTRY: ghcr.io
@@ -48,13 +40,10 @@ jobs:
       with:
         images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
         tags: |
-          type=ref,event=branch
-          type=ref,event=pr
           type=semver,pattern={{version}}
           type=semver,pattern={{major}}.{{minor}}
           type=semver,pattern={{major}}
-          type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'main') || github.ref == format('refs/heads/{0}', 'master') }}
-          type=sha,prefix={{branch}}-
+          type=raw,value=latest
 
     - name: Build and push Docker image
       id: build-image
@@ -62,14 +51,14 @@ jobs:
       with:
         context: .
         platforms: linux/amd64,linux/arm64
-        push: ${{ github.event_name != 'pull_request' }}
+        push: true
         tags: ${{ steps.meta.outputs.tags }}
         labels: ${{ steps.meta.outputs.labels }}
         cache-from: type=gha
         cache-to: type=gha,mode=max
 
     - name: Generate artifact attestation
-      if: github.event_name != 'pull_request' && github.event_name != 'workflow_dispatch'
+      if: github.event_name != 'workflow_dispatch'
       uses: actions/attest-build-provenance@v1
       with:
         subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
@@ -77,7 +66,6 @@ jobs:
         push-to-registry: true
 
     - name: Output Docker image information
-      if: github.event_name != 'pull_request'
       run: |
         echo "## 🐳 Docker Image Published" >> $GITHUB_STEP_SUMMARY
         echo "**Registry:** ${{ env.REGISTRY }}" >> $GITHUB_STEP_SUMMARY