Merge pull request #96238 from claudiubelu/test-images/set-root-home

test images: sets HOME=/root in cloudbuild.yaml

test/images/cloudbuild.yaml

@@ -18,6 +18,9 @@ steps:
     - BASE_REF=$_PULL_BASE_REF
     - WHAT=$_WHAT
     - REGISTRY=gcr.io/k8s-staging-e2e-test-images
+    # The default cloudbuild has HOME=/builder/home and docker buildx is in /root/.docker/cli-plugins/docker-buildx
+    # We need to set the HOME to /root explicitly since we're using docker buildx
+    - HOME=/root
     args:
     - '-c'
     - |