Increase make generate performance on Mac by using delegated mount mo…

…de (#536)

Makefile

@@ -118,7 +118,7 @@ generate-grpc:
 ifdef CI
 	@hack/proto-codegen.sh
 else
-	@docker run --rm -e CI=true -w /src -v $(PWD):/src \
+	@docker run --rm -e CI=true -w /src -v $(PWD):/src:delegated \
 		--user "$(id -u):$(id -g)" \
 		quay.io/kubecarrier/dev:${DEV_IMAGE_TAG} \
 		make generate-grpc
@@ -131,7 +131,7 @@ ifdef CI
 	@hack/codegen.sh
 	@FIX_GOLDEN=1 go test ./pkg/internal/resources/...
 else
-	@docker run --rm -e CI=true -w /src -v $(PWD):/src \
+	@docker run --rm -e CI=true -w /src -v $(PWD):/src:delegated \
 		--user "$(id -u):$(id -g)" \
 		quay.io/kubecarrier/dev:${DEV_IMAGE_TAG} \
 		make generate-config