[Makefile] make docker build options overridable

Signed-off-by: Tariq Ibrahim <[email protected]>

Author: tariq1890

multi-arch.mk

@@ -15,7 +15,7 @@
 PUSH_ON_BUILD ?= false
 ATTACH_ATTESTATIONS ?= false
 DOCKER_BUILD_OPTIONS = --output=type=image,push=$(PUSH_ON_BUILD) --provenance=$(ATTACH_ATTESTATIONS) --sbom=$(ATTACH_ATTESTATIONS)
-DOCKER_BUILD_PLATFORM_OPTIONS = --platform=linux/amd64,linux/arm64
+DOCKER_BUILD_PLATFORM_OPTIONS ?= --platform=linux/amd64,linux/arm64
 
 REGCTL ?= regctl
 $(DRIVER_PUSH_TARGETS): push-%:

native-only.mk

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-DOCKER_BUILD_PLATFORM_OPTIONS = --platform=linux/amd64
+DOCKER_BUILD_PLATFORM_OPTIONS ?= --platform=linux/amd64
 
 $(DRIVER_PUSH_TARGETS): push-%:
 	$(DOCKER) tag "$(IMAGE)" "$(OUT_IMAGE)"