[feature] use buildx to produce multi arch image kubesphere#3683

Signed-off-by: lxm <lxm.xupt@gmail.com>

hack/docker_build_multiarch.sh

@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+
+set -ex
+set -o pipefail
+BUILDPLATFORM="linux/amd64,linux/arm64"
+tag_for_branch() {
+    local tag=$1
+    if [[ "${tag}" == "" ]]; then
+        tag=$(git branch --show-current)
+        tag=${tag/\//-}
+    fi
+
+    if [[ "${tag}" == "master" ]]; then
+        tag="latest"
+    fi
+    echo ${tag}
+}
+
+get_repo() {
+    local repo=${REPO} # read from env
+    repo=${repo:-kubespheredev}
+    if [[ "$1" != "" ]]; then
+      repo="$1"
+    fi
+
+    # set the default value if there's no user defined
+    if [[ "${repo}" == "" ]]; then
+      repo="kubespheredev"
+    fi
+    echo "$repo"
+}
+
+# push to kubespheredev with default latest tag
+TAG=$(tag_for_branch "$1")
+REPO=$(get_repo "$2")
+
+# Push image to dockerhub, need to support multiple push
+cat ~/.docker/config.json | grep index.docker.io
+if [[ $? != 0 ]]; then
+  echo "$DOCKER_PASSWORD" | docker login -u "$DOCKER_USERNAME" --password-stdin
+fi
+
+docker buildx build --platform=${BUILDPLATFORM} \
+                    -f build/Dockerfile \
+                    -t $REPO/ks-apiserver-multiarch:$TAG . \
+                    --target=ks-apiserver --push
+
+docker buildx build --platform=${BUILDPLATFORM} \
+                    -f build/Dockerfile \
+                    -t $REPO/ks-controller-manager-multiarch:$TAG . \
+                    --target=ks-controller-manager --push