diff --git a/.github/workflows/artifacts.yml b/.github/workflows/artifacts.yml
index 262a53e4..f3afd4c1 100644
--- a/.github/workflows/artifacts.yml
+++ b/.github/workflows/artifacts.yml
@@ -64,7 +64,7 @@ jobs:
       - name: Set image ref
         id: image-ref
         run: |
-          echo "value=${{ steps.image-name.outputs.value }}@${{ steps.build.outputs.digest }}" >> "$GITHUB_OUTPUT"
+          echo "value=${{ steps.image-name.outputs.value }}:${{ steps.build.outputs.version }}" >> "$GITHUB_OUTPUT"
           docker image list
 
       - name: Run Trivy vulnerability scanner
diff --git a/.github/workflows/test_unit.yml b/.github/workflows/test_unit.yml
index ad7bd62b..e4204ee3 100644
--- a/.github/workflows/test_unit.yml
+++ b/.github/workflows/test_unit.yml
@@ -1,6 +1,9 @@
 name: Test - Unit
 
-on: push
+on:
+  pull_request:
+    branches:
+      - main
 
 permissions:
   contents: read