use arch in makefile (#393)

Author: Revolyssup

Makefile

@@ -35,7 +35,8 @@ ifeq ($(type), deb)
 image_base="ubuntu"
 image_tag="20.04"
 endif
-
+# Set arch to linux/amd64 if it's not defined
+arch ?= linux/amd64
 buildx=0
 cache_from=type=local,src=/tmp/.buildx-cache
 cache_to=type=local,dest=/tmp/.buildx-cache
@@ -54,6 +55,7 @@ define build
 		--build-arg IMAGE_BASE=$(image_base) \
 		--build-arg IMAGE_TAG=$(image_tag) \
 		--build-arg CODE_PATH=$(4) \
+		--platform $(arch) \
 		-f ./dockerfiles/Dockerfile.$(2).$(3) .
 endef
 else
@@ -69,6 +71,7 @@ define build
 		--load \
 		--cache-from=$(cache_from) \
 		--cache-to=$(cache_to) \
+    --platform $(arch) \
 		-f ./dockerfiles/Dockerfile.$(2).$(3) .
 endef
 endif
@@ -87,6 +90,7 @@ define build_runtime
 		--build-arg IMAGE_BASE=$(image_base) \
 		--build-arg IMAGE_TAG=$(image_tag) \
 		--build-arg CODE_PATH=$(4) \
+    --platform $(arch) \
 		-f ./dockerfiles/Dockerfile.$(2).$(3) .
 endef
 else
@@ -101,6 +105,7 @@ define build_runtime
 		--load \
 		--cache-from=$(cache_from) \
 		--cache-to=$(cache_to) \
+    --platform $(arch) \
 		-f ./dockerfiles/Dockerfile.$(2).$(3) .
 endef
 endif
@@ -118,6 +123,7 @@ define build-image
 		--build-arg OPENRESTY_NAME=$(4) \
 		--build-arg OPENRESTY_VERSION=$(5) \
 		--build-arg CODE_PATH=$(6) \
+    --platform $(arch) \
 		-f ./dockerfiles/Dockerfile.$(2).$(3) .
 endef
 else
@@ -129,6 +135,7 @@ define build-image
 		--load \
 		--cache-from=$(cache_from) \
 		--cache-to=$(cache_to) \
+    --platform $(arch) \
 		-f ./dockerfiles/Dockerfile.$(2).$(3) .
 endef
 endif
@@ -145,6 +152,7 @@ define package
 		--build-arg PACKAGE_TYPE=$(2) \
 		--build-arg OPENRESTY=$(openresty) \
 		--build-arg ARTIFACT=$(artifact) \
+    --platform $(arch) \
 		-f ./dockerfiles/Dockerfile.package.$(1) .
 	docker run -d --rm --name output --net="host" apache/$(1)-packaged-$(2):$(version)
 	docker cp output:/output ${PWD}
@@ -164,6 +172,7 @@ define package_runtime
 		--build-arg PACKAGE_TYPE=$(2) \
 		--build-arg OPENRESTY=$(openresty) \
 		--build-arg ARTIFACT=$(artifact) \
+    --platform $(arch) \
 		-f ./dockerfiles/Dockerfile.package.$(1) .
 	docker run -d --rm --name output --net="host" apache/$(1)-packaged-$(2):$(runtime_version)
 	docker cp output:/output ${PWD}
@@ -290,13 +299,14 @@ package-apisix-base-deb:
 .PHONY: build-fpm
 ifneq ($(buildx), True)
 build-fpm:
-	docker build -t api7/fpm - < ./dockerfiles/Dockerfile.fpm
+	docker build --platform $(arch) -t api7/fpm - < ./dockerfiles/Dockerfile.fpm
 else
 build-fpm:
 	docker buildx build \
 	--load \
 	--cache-from=$(cache_from) \
 	--cache-to=$(cache_to) \
+	--platform $(arch) \
 	-t api7/fpm - < ./dockerfiles/Dockerfile.fpm
 endif