diff --git a/release-tools/cloudbuild.yaml b/release-tools/cloudbuild.yaml
index 1def149943..a22c0e7ac9 100644
--- a/release-tools/cloudbuild.yaml
+++ b/release-tools/cloudbuild.yaml
@@ -12,6 +12,8 @@
 #
 # See https://github.com/kubernetes/test-infra/blob/master/config/jobs/image-pushing/README.md
 # for more details on image pushing process in Kubernetes.
+#
+# To promote release images, see https://github.com/kubernetes/k8s.io/tree/master/k8s.gcr.io/images/k8s-staging-sig-storage.
 
 # This must be specified in seconds. If omitted, defaults to 600s (10 mins).
 timeout: 1200s
@@ -38,7 +40,7 @@ substitutions:
   # a branch like 'master' or 'release-0.2', or a tag like 'v0.2'.
   _PULL_BASE_REF: 'master'
   # The default gcr.io staging project for Kubernetes-CSI
-  # (=> https://console.cloud.google.com/gcr/images/k8s-staging-csi/GLOBAL).
+  # (=> https://console.cloud.google.com/gcr/images/k8s-staging-sig-storage/GLOBAL).
   # Might be overridden in the Prow build job for a repo which wants
   # images elsewhere.
-  _STAGING_PROJECT: 'k8s-staging-csi'
+  _STAGING_PROJECT: 'k8s-staging-sig-storage'
diff --git a/release-tools/prow.sh b/release-tools/prow.sh
index 93964e18eb..9778635f92 100755
--- a/release-tools/prow.sh
+++ b/release-tools/prow.sh
@@ -85,7 +85,7 @@ get_versioned_variable () {
     echo "$value"
 }
 
-configvar CSI_PROW_BUILD_PLATFORMS "linux amd64; windows amd64 .exe; linux ppc64le -ppc64le; linux s390x -s390x" "Go target platforms (= GOOS + GOARCH) and file suffix of the resulting binaries"
+configvar CSI_PROW_BUILD_PLATFORMS "linux amd64; windows amd64 .exe; linux ppc64le -ppc64le; linux s390x -s390x; linux arm64 -arm64" "Go target platforms (= GOOS + GOARCH) and file suffix of the resulting binaries"
 
 # If we have a vendor directory, then use it. We must be careful to only
 # use this for "make" invocations inside the project's repo itself because
@@ -1198,6 +1198,12 @@ gcr_cloud_build () {
     # Required for "docker buildx build --push".
     gcloud auth configure-docker
 
+    if find . -name Dockerfile | grep -v ^./vendor | xargs --no-run-if-empty cat | grep -q ^RUN; then
+        # Needed for "RUN" steps on non-linux/amd64 platforms.
+        # See https://github.com/multiarch/qemu-user-static#getting-started
+        (set -x; docker run --rm --privileged multiarch/qemu-user-static --reset -p yes)
+    fi
+
     # Extract tag-n-hash value from GIT_TAG (form vYYYYMMDD-tag-n-hash) for REV value.
     REV=v$(echo "$GIT_TAG" | cut -f3- -d 'v')