Robust handling of /usr/sbin/rm in Docerfile

Change-Id: I5a6b8fadb69455599271fe6bec7e842d72b5dd34

Author: mattcary

Dockerfile

@@ -25,7 +25,7 @@ RUN GOARCH=$(echo $TARGETPLATFORM | cut -f2 -d '/') GCE_PD_CSI_STAGING_VERSION=$
 
 # MAD HACKS: Build a version first so we can take the scsi_id bin and put it somewhere else in our real build
 FROM k8s.gcr.io/build-image/debian-base:buster-v1.9.0 as mad-hack
-RUN ln -s /bin/rm /usr/sbin/rm \
+RUN ln -fs /bin/rm /usr/sbin/rm \
   && clean-install udev
 
 # Start from Kubernetes Debian base