diff --git a/Dockerfile b/Dockerfile
index ef120e7..37dd392 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,11 +1,14 @@
-FROM debian:trixie
+FROM debian:bookworm
 
 ENV DEBIAN_FRONTEND=noninteractive
 
 # 한국 Debian 미러 소스로 변경
-RUN echo "deb http://ftp.kr.debian.org/debian trixie main" > /etc/apt/sources.list && \
-    echo "deb http://ftp.kr.debian.org/debian trixie-updates main" >> /etc/apt/sources.list && \
-    echo "deb http://ftp.kr.debian.org/debian-security trixie-security main" >> /etc/apt/sources.list
+RUN echo "deb http://ftp.kr.debian.org/debian bookworm main" > /etc/apt/sources.list && \
+    echo "deb http://ftp.kr.debian.org/debian bookworm-updates main" >> /etc/apt/sources.list && \
+    echo "deb http://ftp.kr.debian.org/debian-security bookworm-security main" >> /etc/apt/sources.list
+
+RUN sed -i 's|deb.debian.org|ftp.kaist.ac.kr|g' /etc/apt/sources.list && \
+    sed -i 's|security.debian.org|ftp.kaist.ac.kr/debian-security|g' /etc/apt/sources.list
 
 RUN apt-get update
 
@@ -20,9 +23,13 @@ RUN sed -i 's/^# *ko_KR.UTF-8 UTF-8/ko_KR.UTF-8 UTF-8/' /etc/locale.gen && local
 # install modules
 RUN apt-get install -y dbus-x11 x11-xserver-utils xfce4 xfce4-goodies xorgxrdp xrdp tumbler \
     ibus ibus-gtk3 fcitx5-hangul fcitx5-config-qt fcitx5-frontend-gtk3 fcitx5-frontend-gtk4 fcitx5-frontend-qt5 fonts-noto-cjk iputils-ping \
-    sudo nano vim net-tools chromium git curl npm --fix-missing \ 
+    sudo nano vim net-tools chromium git curl --fix-missing \ 
     && apt-get clean && rm -rf /var/lib/apt/lists/*
 
+# Node.js와 npm을 NodeSource에서 설치 (더 안정적)
+RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - && \
+    apt-get install -y nodejs
+
 # install vscode
 RUN curl -q -L -o vscode.deb https://update.code.visualstudio.com/1.103.2/linux-deb-x64/stable \
     && apt-get install ./vscode.deb \
diff --git a/Dockerfile.test b/Dockerfile.test
new file mode 100644
index 0000000..a8d98e8
--- /dev/null
+++ b/Dockerfile.test
@@ -0,0 +1,35 @@
+FROM debian:trixie
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+# 한국 Debian 미러 소스로 변경
+RUN echo "deb http://ftp.kr.debian.org/debian trixie main" > /etc/apt/sources.list && \
+    echo "deb http://ftp.kr.debian.org/debian trixie-updates main" >> /etc/apt/sources.list && \
+    echo "deb http://ftp.kr.debian.org/debian-security trixie-security main" >> /etc/apt/sources.list
+
+RUN apt-get update
+
+# 기본 패키지만 설치 (빠른 테스트용)
+RUN apt-get install -y \
+    locales \
+    xfce4 \
+    xfce4-goodies \
+    xorgxrdp \
+    xrdp \
+    --fix-missing \
+    && apt-get clean && rm -rf /var/lib/apt/lists/*
+
+# 한국어 설정
+ENV TZ=Asia/Seoul
+ENV LANG=ko_KR.UTF-8
+ENV LANGUAGE=ko_KR:ko
+ENV LC_ALL=ko_KR.UTF-8
+
+RUN sed -i 's/^# *ko_KR.UTF-8 UTF-8/ko_KR.UTF-8 UTF-8/' /etc/locale.gen && \
+    locale-gen $LANG && \
+    update-locale LANG=$LANG
+
+EXPOSE 3389
+
+# 간단한 시작 명령
+CMD ["/bin/bash"]