diff --git a/insta-lab/Dockerfile b/insta-lab/Dockerfile
index 470d10b..a7ca655 100644
--- a/insta-lab/Dockerfile
+++ b/insta-lab/Dockerfile
@@ -1,15 +1,23 @@
-FROM python:3.12-slim
+FROM python:3.12-slim-bookworm
 ENV PYTHONUNBUFFERED=1
 
 WORKDIR /app
 
+# Korean fonts + Chromium runtime deps (Debian 12 / bookworm)
+# `playwright install --with-deps`를 쓰지 않는 이유: 그 명령은 Ubuntu 패키지명을
+# 사용해 Debian에서 ttf-ubuntu-font-family / ttf-unifont 등 없는 패키지를 시도
+# → apt 실패. 대신 Chromium이 실제 필요로 하는 라이브러리만 명시 설치.
 RUN apt-get update && apt-get install -y --no-install-recommends \
     fonts-noto-cjk fonts-noto-cjk-extra \
+    libnss3 libnspr4 libdbus-1-3 libatk1.0-0 libatk-bridge2.0-0 \
+    libcups2 libdrm2 libxkbcommon0 libxcomposite1 libxdamage1 \
+    libxfixes3 libxrandr2 libgbm1 libxshmfence1 libpango-1.0-0 \
+    libcairo2 libasound2 libatspi2.0-0 \
  && rm -rf /var/lib/apt/lists/*
 
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
-RUN playwright install --with-deps chromium
+RUN playwright install chromium
 
 COPY . .