fix build step naming

.github/workflows/ghcr_deploy.yml

@@ -19,6 +19,13 @@ env:
   IMAGE_NAME: ${{ github.repository }}
   CHART_NAME: litellm-helm
 
+# Add workflow input
+inputs:
+  image_tag:
+    description: 'Custom image tag name'
+    required: false
+    default: ''  # Empty default means we'll use PR-based naming
+
 # There is a single job in this workflow. It's configured to run on the latest available version of Ubuntu.
 jobs:
   # print commit hash, tag, and release type
@@ -99,6 +106,8 @@ jobs:
         uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            ${{ inputs.image_tag != '' && format('type=raw,value={0}', inputs.image_tag) || 'type=ref,event=pr' }}
       # Configure multi platform Docker builds
       - name: Set up QEMU
         uses: docker/setup-qemu-action@e0e4588fad221d38ee467c0bffd91115366dc0c5