fixup

.github/workflows/velox_docker.yml

@@ -211,6 +211,12 @@ jobs:
     runs-on: ubuntu-20.04
     container: centos:8
     steps:
+      - name: Maximize build space
+        uses: easimon/maximize-build-space@master
+        with:
+          root-reserve-mb: 512
+          swap-size-mb: 1024
+          remove-dotnet: 'true'
       - uses: actions/checkout@v2
       - name: Download All Artifacts
         uses: actions/download-artifact@v2