fix(arm64): s/BUILDPLATFORM/TARGETPLATFORM/g

Makefile

@@ -100,7 +100,7 @@ BUILDX_INFO ?= $(shell docker buildx 2>&1 >/dev/null; echo $?)
 DOCKER_LABELS?=--label org.opencontainers.image.version=$(KONG_VERSION) --label org.opencontainers.image.created=`date -u +'%Y-%m-%dT%H:%M:%SZ'` --label org.opencontainers.image.revision=$(KONG_SHA)
 
 ifeq ($(BUILDX),false)
-	DOCKER_COMMAND?=docker build --progress=$(DOCKER_BUILD_PROGRESS) $(KONG_EE_PORTS_FLAG) --build-arg BUILDPLATFORM=x/amd64 $(DOCKER_LABELS)
+	DOCKER_COMMAND?=docker build --build-arg TARGETPLATFORM=linux/amd64 --progress=$(DOCKER_BUILD_PROGRESS) $(KONG_EE_PORTS_FLAG) $(DOCKER_LABELS)
 else
 	DOCKER_COMMAND?=docker buildx build --progress=$(DOCKER_BUILD_PROGRESS) $(KONG_EE_PORTS_FLAG) --push --platform="linux/amd64,linux/arm64" $(DOCKER_LABELS)
 endif

dockerfiles/Dockerfile.package

@@ -22,7 +22,10 @@ ARG RESTY_IMAGE_TAG="18.04"
 ARG PACKAGE_TYPE
 ARG KONG_VERSION
 ARG KONG_PACKAGE_NAME
-ARG BUILDPLATFORM
+ARG TARGETPLATFORM
+ENV TARGETPLATFORM=${TARGETPLATFORM}
+ARG TARGETPLATFORM
+ENV TARGETPLATFORM=${TARGETPLATFORM}
 
 ARG PACKAGE_CONFLICTS="kong-enterprise-edition"
 ENV PACKAGE_CONFLICTS $PACKAGE_CONFLICTS
@@ -40,4 +43,4 @@ COPY kong.logrotate /tmp/build/etc/kong/kong.logrotate
 RUN /fpm-entrypoint.sh
 
 FROM alpine
-COPY --from=FPM /output /output
+COPY --from=FPM /output /output

fpm-entrypoint.sh

@@ -43,8 +43,7 @@ elif [ "$PACKAGE_TYPE" == "rpm" ]; then
     OUTPUT_FILE_SUFFIX=".el${RESTY_IMAGE_TAG}"
   fi
 fi
-OUTPUT_FILE_SUFFIX="${OUTPUT_FILE_SUFFIX}."$(echo ${BUILDPLATFORM} | awk -F "/" '{ print $2}')
-
+OUTPUT_FILE_SUFFIX="${OUTPUT_FILE_SUFFIX}."$(echo ${TARGETPLATFORM} | awk -F "/" '{ print $2}')
 ROCKSPEC_VERSION=`basename /tmp/build/build/usr/local/lib/luarocks/rocks/kong/*`
 
 if [ "$PACKAGE_TYPE" == "apk" ]; then