diff --git a/be/Dockerfile.prod b/be/Dockerfile.prod
index 5ba0f03..f5915e2 100644
--- a/be/Dockerfile.prod
+++ b/be/Dockerfile.prod
@@ -1,5 +1,5 @@
 # Multi-stage build for production
-FROM python:alpine as base
+FROM python:alpine AS base
 
 # Set environment variables
 ENV PYTHONDONTWRITEBYTECODE=1 \
@@ -16,11 +16,12 @@ RUN apk add --no-cache \
     postgresql-dev \
     curl
 
-# Create non-root user
-RUN groupadd -r appuser && useradd -r -g appuser appuser
+# Create non-root user (Alpine Linux style)
+RUN addgroup -g 1001 -S appuser && \
+    adduser -u 1001 -S appuser -G appuser
 
 # Development stage
-FROM base as development
+FROM base AS development
 WORKDIR /app
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
@@ -30,7 +31,7 @@ USER appuser
 CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--reload"]
 
 # Production stage
-FROM base as production
+FROM base AS production
 WORKDIR /app
 
 # Install production dependencies