Add environment for build-and-publish job

Added environment configuration for build-pr.

.github/workflows/pr-docker-build.yml

@@ -9,10 +9,16 @@ permissions: write-all
 jobs:
   build-and-publish:
     runs-on: ubuntu-latest
-    
+
+    environment: 
+      name: build-pr
+
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          ref: ${{ github.event.pull_request.head.sha }}
 
       - name: Log in to GitHub Container Registry
         uses: docker/login-action@v3