Run unit tests via sudo

Since distrobuilder should run via root.

Signed-off-by: JUN JIE NAN <nanjunjie@gmail.com>

Makefile

@@ -5,6 +5,8 @@ SPHINXENV=.sphinx/venv/bin/activate
 
 .PHONY: default
 default:
+	go env -w GOCACHE=$(shell go env GOCACHE)
+	$(shell go env | grep -v GOENV | sed "s/'//g" > $(shell go env GOENV))
 	gofmt -s -w .
 	go install -v ./...
 	@echo "distrobuilder built successfully"
@@ -16,7 +18,7 @@ update-gomod:
 
 .PHONY: check
 check: default
-	go test -v ./...
+	sudo GOENV=$(shell go env GOENV) go test -v ./...
 
 .PHONY: dist
 dist: