feat(build): add buildx support

Author: duanhongyi

Makefile

@@ -3,6 +3,7 @@ DRYCC_REGISTRY ?= $(DEV_REGISTRY)
 IMAGE_PREFIX ?= drycc
 COMPONENT ?= controller
 SHORT_NAME ?= $(COMPONENT)
+PLATFORM ?= linux/amd64,linux/arm64
 
 include versioning.mk
 
@@ -30,6 +31,9 @@ docker-build: check-docker
 	docker build ${DOCKER_BUILD_FLAGS} -t ${IMAGE} rootfs
 	docker tag ${IMAGE} ${MUTABLE_IMAGE}
 
+docker-buildx:
+	docker buildx build --platform ${PLATFORM} -t ${IMAGE} rootfs --push
+
 docker-build-test: check-docker
 	docker build ${DOCKER_BUILD_FLAGS} -t ${IMAGE}.test -f rootfs/Dockerfile.test rootfs