diff --git a/Dockerfile b/Dockerfile
index 8cec4de..505665c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,13 +1,13 @@
 FROM golang:1.17-buster
 
 RUN addgroup \
-    -S -g 1000 \
+    --gid 1000 \
     gitea && \
   adduser \
-    -S-D \
-    -s /bin/bash \
-    -u 1000 \
-    -G gitea \
+    -D \
+    --shell /bin/bash \
+    --uid 1000 \
+    --group gitea \
     gitea
 
 # upgrade git to v2.33.0