diff --git a/.github/workflows/build_images.yml b/.github/workflows/build_images.yml
index b02933a..0dab789 100644
--- a/.github/workflows/build_images.yml
+++ b/.github/workflows/build_images.yml
@@ -11,7 +11,7 @@ jobs:
   build:
     name: "Build Docker Images"
     runs-on: ubuntu-latest
-    environment: ${{ github.ref }}
+    environment: ${GITHUB_HEAD_REF:-${GITHUB_REF#refs/heads/}}
 
     defaults:
       run: