diff --git a/docker/Dockerfile.prod b/docker/Dockerfile.prod
index 1658972..33f571c 100644
--- a/docker/Dockerfile.prod
+++ b/docker/Dockerfile.prod
@@ -17,11 +17,18 @@ FROM python:3.12-slim
 WORKDIR /app
 
 # Install system dependencies
-RUN sed -i 's/deb.debian.org/mirrors.aliyun.com/g' /etc/apt/sources.list.d/*.list /etc/apt/sources.list && \
-    apt-get update && apt-get install -y \
-    postgresql-client \
-    curl \
-    && rm -rf /var/lib/apt/lists/*
+RUN set -eux; \
+    for source_file in /etc/apt/sources.list /etc/apt/sources.list.d/*.list /etc/apt/sources.list.d/*.sources; do \
+        if [ -f "$source_file" ]; then \
+            sed -i 's|deb.debian.org|mirrors.aliyun.com|g' "$source_file"; \
+            sed -i 's|security.debian.org|mirrors.aliyun.com|g' "$source_file"; \
+        fi; \
+    done; \
+    apt-get update; \
+    apt-get install -y --no-install-recommends \
+        postgresql-client \
+        curl; \
+    rm -rf /var/lib/apt/lists/*
 
 # Copy Python dependencies
 COPY pyproject.toml ./