Fix more environment variables

Author: abkfenris

.github/workflows/push.yml

@@ -70,7 +70,7 @@ jobs:
         path: ${ BUILDX_CACHE }
         key: ${ CACHE_KEY }${{ github.sha }}
         restore-keys: |
-          ${{ CACHE_KEY }}
+          ${ CACHE_KEY }
     
     - name: Login to Docker Hub
       uses: docker/login-action@v1