userfront dev모드 구동 모드 run으로 변경

userfront/Dockerfile

@@ -1,3 +1,14 @@
+FROM ghcr.io/cirruslabs/flutter:3.38.0 AS dev
+ENV RUN_FLUTTER_AS_ROOT=true
+WORKDIR /workspace
+COPY scripts ./scripts
+COPY locales ./locales
+COPY userfront ./userfront
+WORKDIR /workspace/userfront
+RUN flutter pub get
+EXPOSE 5000
+CMD ["sh", "./scripts/dev-server.sh"]
+
 # Stage 1: Build Flutter
 FROM ghcr.io/cirruslabs/flutter:3.38.0 AS build
 ENV RUN_FLUTTER_AS_ROOT=true
@@ -16,7 +27,7 @@ COPY userfront/scripts/optimize-web-build.mjs /work/scripts/optimize-web-build.m
 RUN node /work/scripts/optimize-web-build.mjs /work/build/web
 
 # Stage 2: Serve with Nginx
-FROM alpine:3.23
+FROM alpine:3.23 AS production
 RUN apk add --no-cache nginx nginx-mod-http-brotli
 # Copy built assets
 COPY --from=optimize /work/build/web /usr/share/nginx/html