From ebe148e537ca102f32936fc3ea002af24d4c3306 Mon Sep 17 00:00:00 2001
From: Hugh Brown <hughdbrown@yahoo.com>
Date: Tue, 3 Mar 2026 22:36:56 -0700
Subject: [PATCH] fix: use Alpine-compatible flags for addgroup/adduser in
 frontend Dockerfile

node:20-alpine uses BusyBox which does not support GNU-style
--system/--ingroup flags. Switch to -S/-G equivalents.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 frontend/Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/frontend/Dockerfile b/frontend/Dockerfile
index 422032f7..61293512 100644
--- a/frontend/Dockerfile
+++ b/frontend/Dockerfile
@@ -39,7 +39,7 @@ COPY --from=builder /app/node_modules ./node_modules
 COPY --from=builder /app/next.config.ts ./next.config.ts
 
 # Run as non-root user
-RUN addgroup --system appgroup && adduser --system --ingroup appgroup appuser \
+RUN addgroup -S appgroup && adduser -S -G appgroup appuser \
   && chown -R appuser:appgroup /app
 USER appuser