diff --git a/Dockerfile.artifacts b/Dockerfile.artifacts
index 2f890e16..ee1254f8 100644
--- a/Dockerfile.artifacts
+++ b/Dockerfile.artifacts
@@ -33,10 +33,11 @@ ADD LICENSE /go/src/github.com/umputun/remark/
 COPY --from=build-frontend /srv/web/public/ web
 
 RUN \ 
-    sed -i "s|https://demo.remark42.com|http://127.0.0.1:8080|g" /go/src/github.com/umputun/remark/backend/web/*.js && \
-    sed -i "/REMOVE-START/,/REMOVE-END/d" ./web/iframe.html && \
+    export WEB_ROOT=/go/src/github.com/umputun/remark/backend/web && \
+    sed -i "s|https://demo.remark42.com|http://127.0.0.1:8080|g" ${WEB_ROOT}/*.js && \
+    sed -i "/REMOVE-START/,/REMOVE-END/d" ${WEB_ROOT}/iframe.html && \
     go get -v github.com/rakyll/statik && \
-    statik --src=/go/src/github.com/umputun/remark/backend/web --dest=/go/src/github.com/umputun/remark/backend/app/rest -p api -f && \
+    statik --src=${WEB_ROOT} --dest=/go/src/github.com/umputun/remark/backend/app/rest -p api -f && \
     ls -la /go/src/github.com/umputun/remark/backend/app/rest/api/statik.go && \
     ls -la /go/src/github.com/umputun/remark/backend/web/
 
diff --git a/backend/app/cmd/server.go b/backend/app/cmd/server.go
index 1368400b..d2cce995 100644
--- a/backend/app/cmd/server.go
+++ b/backend/app/cmd/server.go
@@ -167,7 +167,7 @@ func (s *ServerCommand) newServerApp() (*serverApp, error) {
 	if !strings.HasPrefix(s.RemarkURL, "http://") && !strings.HasPrefix(s.RemarkURL, "https://") {
 		return nil, errors.Errorf("invalid remark42 url %s", s.RemarkURL)
 	}
-	log.Printf("[DEBUG] remark42 url=%s", s.RemarkURL)
+	log.Printf("[INFO] root url=%s", s.RemarkURL)
 
 	storeEngine, err := s.makeDataStore()
 	if err != nil {
@@ -314,7 +314,7 @@ func (a *serverApp) activateBackup(ctx context.Context) {
 
 // makeDataStore creates store for all sites
 func (s *ServerCommand) makeDataStore() (result engine.Interface, err error) {
-	log.Printf("[INFO] make data store, type %s", s.Store.Type)
+	log.Printf("[INFO] make data store, type=%s", s.Store.Type)
 
 	switch s.Store.Type {
 	case "bolt":
diff --git a/backend/app/rest/auth/auth.go b/backend/app/rest/auth/auth.go
index 7af61c9e..cd3d7248 100644
--- a/backend/app/rest/auth/auth.go
+++ b/backend/app/rest/auth/auth.go
@@ -172,10 +172,8 @@ func (a *Authenticator) basicDevUser(r *http.Request) bool {
 		return false
 	}
 
-	log.Printf("[DEBUG] dev user auth")
 	s := strings.SplitN(r.Header.Get("Authorization"), " ", 2)
 	if len(s) != 2 {
-		log.Printf("[WARN] dev user auth failed, incorrect auth header %s", r.Header.Get("Authorization"))
 		return false
 	}