add lint

Makefile

@@ -4,7 +4,22 @@ DEV_USER_USERNAME ?= dev
 DEV_USER_EMAIL ?= dev@example.com
 DEV_USER_PASSWORD ?= dev123456
 
-.PHONY: dev-user migrate-up
+.PHONY: dev-user migrate-up fmt-check vet lint check
+
+fmt-check:
+	@set -e; files=$$(git ls-files -z '*.go' ':!proto/*.pb.go' | xargs -0 -r gofmt -l); if [ -n "$$files" ]; then printf '%s\n' "$$files"; exit 1; fi
+
+vet:
+	go vet ./...
+
+lint:
+	golangci-lint run ./...
+
+check:
+	$(MAKE) fmt-check
+	$(MAKE) vet
+	$(MAKE) lint
+	$(MAKE) test
 
 migrate-up:
 	goose -dir ./migrations postgres "$(DATABASE_URL)" up