Static linking fix (#37)

Makefile

@@ -22,15 +22,15 @@ jepsen_base_img:
 	docker build --tag=mysync-jepsen-test-base tests/images/jepsen_common
 
 test:
-	GOOS=linux go build -ldflags "-linkmode external -extldflags -static" -o ./cmd/mysync/mysync ./cmd/mysync/...
+	GOOS=linux go build -tags netgo,osusergo -o ./cmd/mysync/mysync ./cmd/mysync/...
 	go build ./tests/...
 	rm -fr ./tests/images/mysql/mysync && cp ./cmd/mysync/mysync ./tests/images/mysql/mysync
 	rm -rf ./tests/logs
 	mkdir ./tests/logs
 	(cd tests; go test -timeout 150m)
 
 jepsen_test:
-	GOOS=linux go build -ldflags "-linkmode external -extldflags -static" -o ./cmd/mysync/mysync ./cmd/mysync/...
+	GOOS=linux go build -tags netgo,osusergo -o ./cmd/mysync/mysync ./cmd/mysync/...
 	go build ./tests/...
 	rm -fr ./tests/images/mysql_jepsen/mysync && cp ./cmd/mysync/mysync ./tests/images/mysql_jepsen/mysync
 	docker-compose -p mysync -f ./tests/images/jepsen-compose.yml up -d --force-recreate --build