diff --git a/Dockerfile b/Dockerfile
index 52f2acb..3b6919d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,14 @@
 FROM python:3.11-slim
 
+ENV TZ=Asia/Seoul
+
+RUN apt update && \
+    apt install -y tzdata && \
+    ln -sf /usr/share/zoneinfo/Asia/Seoul /etc/localtime && \
+    echo "Asia/Seoul" > /etc/timezone && \
+    pip install --no-cache-dir -r requirements.txt && \
+    apt clean
+
 WORKDIR /app
 
 COPY requirements.txt .