refactor(docker): 优化Dockerfile中的用户和组创建命令

使用更简洁的useradd和addgroup命令替代原有写法，保持功能不变但提高可读性

docker/ppanel-admin-web/Dockerfile

@@ -5,8 +5,8 @@ FROM oven/bun:latest AS base
 WORKDIR /app
 
 # Create a non-root user for running the production application
-RUN addgroup --system --gid 1001 nodejs \
-    && adduser --system --uid 1001 nextjs
+RUN groupadd -r -g 1001 nodejs && \
+    useradd -r -u 1001 -g nodejs -d /home/nextjs -m nextjs
 
 # Change to non-root user
 USER nextjs

docker/ppanel-user-web/Dockerfile

@@ -5,8 +5,8 @@ FROM oven/bun:latest AS base
 WORKDIR /app
 
 # Create non-root user and set permissions
-RUN addgroup --system --gid 1001 nodejs \
-    && adduser --system --uid 1001 nextjs
+RUN addgroup -r -g 1001 nodejs && \
+    useradd -r -u 1001 -g nodejs -d /home/nextjs -m nextjs
 
 # Copy build output and static files
 COPY ./apps/user/.next/standalone ./