bugfix of pipeline

Author: m-karo

.github/workflows/publish-snapshot.yml

@@ -16,7 +16,7 @@ jobs:
           echo "INPUT_RETRIEVER_PROJECT=$(basename "$GITHUB_REPOSITORY" | tr '[:upper:]' '[:lower:]')-input-retriever" >> $GITHUB_ENV
           echo "RAO_PROJECT=$(basename "$GITHUB_REPOSITORY" | tr '[:upper:]' '[:lower:]')-optimizer" >> $GITHUB_ENV
 #          echo "IMAGE_TAG=$(date +%Y%m%d%H%M)" >> $GITHUB_ENV
-          echo "IMAGE_TAG=${{ github.ref_name }}" >> $GITHUB_ENV
+          echo "IMAGE_TAG=${GITHUB_REF_NAME}" >> $GITHUB_ENV
           echo "LATEST_TAG=latest" >> $GITHUB_ENV
 
       - uses: docker/login-action@v3