diff --git a/Dockerfile b/Dockerfile
index 069558f..13edc0c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,7 @@
 # Delphi Consulting Group Database System - Docker Configuration
-FROM python:3.12-slim
+# Allow overriding the base image via build-arg to use mirrors if Docker Hub is flaky
+ARG BASE_IMAGE=python:3.12-slim
+FROM ${BASE_IMAGE}
 
 # Set environment variables
 ENV PYTHONDONTWRITEBYTECODE=1 \