diff --git a/Dockerfile b/Dockerfile
index 905416a9..d8932b93 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,7 @@ FROM umputun/baseimage:buildgo-latest as build-backend
 ADD . /go/src/github.com/umputun/remark
 WORKDIR /go/src/github.com/umputun/remark
 
-RUN cd app && go test -v $(go list -e ./... | grep -v vendor)
+RUN cd app && go test -v -race $(go list -e ./... | grep -v vendor)
 
 RUN gometalinter --disable-all --deadline=300s --vendor --enable=vet --enable=vetshadow --enable=golint \
     --enable=staticcheck --enable=ineffassign --enable=goconst --enable=errcheck --enable=unconvert \
diff --git a/app/rest/api/rest_test.go b/app/rest/api/rest_test.go
index 3c15700f..c432ecce 100644
--- a/app/rest/api/rest_test.go
+++ b/app/rest/api/rest_test.go
@@ -23,7 +23,7 @@ import (
 )
 
 var testDb = "/tmp/test-remark.db"
-var testHtml = "/tmp/test-remark.html"
+var testHTML = "/tmp/test-remark.html"
 
 func TestServer_Ping(t *testing.T) {
 	srv, port := prep(t)
@@ -426,7 +426,7 @@ func prep(t *testing.T) (srv *Rest, port int) {
 		WebRoot:  "/tmp",
 	}
 
-	ioutil.WriteFile(testHtml, []byte("some html"), 0700)
+	ioutil.WriteFile(testHTML, []byte("some html"), 0700)
 	portSetCh := make(chan bool)
 	go func() {
 		port = rand.Intn(50000) + 1025
@@ -469,7 +469,7 @@ func cleanup(srv *Rest) {
 	srv.httpServer.Close()
 	srv.httpServer.Shutdown(context.Background())
 	os.Remove(testDb)
-	os.Remove(testHtml)
+	os.Remove(testHTML)
 }
 
 type mockCache struct{}