diff --git a/app/Dockerfile b/app/Dockerfile
index 4f9d3fd..97d1383 100644
--- a/app/Dockerfile
+++ b/app/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.12
+FROM alpine:3.14
 EXPOSE 9000/tcp
 
 ENV SCRIPT_ROOT=/opt/tt-rss
diff --git a/app/startup.sh b/app/startup.sh
index cae025d..cd1706c 100755
--- a/app/startup.sh
+++ b/app/startup.sh
@@ -50,7 +50,7 @@ else
 	if [ -z "$TTRSS_NO_STARTUP_PLUGIN_UPDATES" ]; then
 		echo updating all local plugins...
 
-		find $DST_DIR/plugins.local -type d -maxdepth 1 | while read PLUGIN; do
+		find $DST_DIR/plugins.local/ -maxdepth 1 -mindepth 1 -type d | while read PLUGIN; do
 			echo updating $PLUGIN...
 
 			cd $PLUGIN && \