diff --git a/.github/workflows/build_push.yml b/.github/workflows/build_push.yml
index 4c30dbd2..92b03a6f 100644
--- a/.github/workflows/build_push.yml
+++ b/.github/workflows/build_push.yml
@@ -22,7 +22,8 @@ jobs:
   prepare:
     name: Prepare job
     runs-on: docker
-    container: ubuntu-latest
+    container: 
+      image: ubuntu-latest
     outputs:
       individualMatrix: ${{ steps.generate-matrices.outputs.individualMatrix }}
     steps: