Avoid sed bundled with Darwin for building test images

test/images/image-util.sh

@@ -22,6 +22,7 @@ TASK=$1
 IMAGE=$2
 
 KUBE_ROOT="$(cd "$(dirname "${BASH_SOURCE}")/../.." && pwd -P)"
+source "${KUBE_ROOT}/hack/lib/util.sh"
 
 # Mapping of go ARCH to actual architectures shipped part of multiarch/qemu-user-static project
 declare -A QEMUARCHS=( ["amd64"]="x86_64" ["arm"]="arm" ["arm64"]="aarch64" ["ppc64le"]="ppc64le" ["s390x"]="s390x" )
@@ -48,6 +49,8 @@ build() {
     archs=${!QEMUARCHS[@]}
   fi
 
+  kube::util::ensure-gnu-sed
+
   for arch in ${archs}; do
     echo "Building image for ${IMAGE} ARCH: ${arch}..."
 
@@ -66,19 +69,19 @@ build() {
 
     if [[ -f BASEIMAGE ]]; then
       BASEIMAGE=$(getBaseImage ${arch})
-      sed -i "s|BASEIMAGE|${BASEIMAGE}|g" Dockerfile
+      ${SED} -i "s|BASEIMAGE|${BASEIMAGE}|g" Dockerfile
     fi
 
     # copy the qemu-*-static binary to docker image to build the multi architecture image on x86 platform
     if [[ $(grep "CROSS_BUILD_" Dockerfile) ]]; then
       if [[ "${arch}" == "amd64" ]]; then
-        sed -i "/CROSS_BUILD_/d" Dockerfile
+        ${SED} -i "/CROSS_BUILD_/d" Dockerfile
       else
-        sed -i "s|QEMUARCH|${QEMUARCHS[$arch]}|g" Dockerfile
+        ${SED} -i "s|QEMUARCH|${QEMUARCHS[$arch]}|g" Dockerfile
         # Register qemu-*-static for all supported processors except the current one
         docker run --rm --privileged multiarch/qemu-user-static:register --reset
         curl -sSL https://github.com/multiarch/qemu-user-static/releases/download/${QEMUVERSION}/x86_64_qemu-${QEMUARCHS[$arch]}-static.tar.gz | tar -xz -C ${temp_dir}
-        sed -i "s/CROSS_BUILD_//g" Dockerfile
+        ${SED} -i "s/CROSS_BUILD_//g" Dockerfile
       fi
     fi
 
@@ -101,7 +104,7 @@ push() {
   done
 
   # Make archs list into image manifest. Eg: 'amd64 ppc64le' to '${REGISTRY}/${IMAGE}-amd64:${TAG} ${REGISTRY}/${IMAGE}-ppc64le:${TAG}'
-  manifest=$(echo $archs | sed -e "s~[^ ]*~$REGISTRY\/$IMAGE\-&:$TAG~g")
+  manifest=$(echo $archs | ${SED} -e "s~[^ ]*~$REGISTRY\/$IMAGE\-&:$TAG~g")
   docker manifest create --amend ${REGISTRY}/${IMAGE}:${TAG} ${manifest}
   for arch in ${archs}; do
     docker manifest annotate --arch ${arch} ${REGISTRY}/${IMAGE}:${TAG} ${REGISTRY}/${IMAGE}-${arch}:${TAG}