diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..6d17a9c
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,15 @@
+__pycache__/
+*.pyc
+*.pyo
+*.pyd
+*.log
+.DS_Store
+.env
+.venv/
+venv/
+node_modules/
+.git/
+.gitignore
+db.sqlite3
+media/
+staticfiles/
\ No newline at end of file
diff --git a/Dockerfile b/Dockerfile
index 9a6fc34..d111d59 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,7 +12,9 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     && rm -rf /var/lib/apt/lists/*
 
 COPY requirements.txt /app/
-RUN pip install --no-cache-dir -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple
+RUN pip install --no-cache-dir -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple \
+    && apt-get purge -y --auto-remove build-essential \
+    && rm -rf /var/lib/apt/lists/*
 
 COPY . /app