Update Makefile (#204)

make builds accessible to intel and ARM chips

Author: ErinWeisbart

worker/Makefile

@@ -4,7 +4,7 @@ tag = 2.2.0_4.2.8
 
 .DEFAULT_GOAL: build
 build:
-	docker build -t $(user)/$(project):$(tag) . 
+	docker buildx build --platform linux/amd64 -t $(user)/$(project):$(tag) . 
 	docker login -u $(user)
 	docker push $(user)/$(project):$(tag)
 	echo "Your new docker registry is ready at: $(user)/$(project):$(tag)"