diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 48a9d1c7cc..a9a6a7b936 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -81,6 +81,7 @@ jobs:
   dockerize:
     needs: [native-image,test]
     runs-on: ubuntu-latest
+    if: github.ref == 'refs/heads/master'
     steps:
       - uses: actions/checkout@v2
       - run: git fetch --unshallow