diff --git a/Dockerfile b/Dockerfile
index e48ebde..369b352 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,8 @@ WORKDIR /app
 # System deps for PyMuPDF and document processing
 RUN apt-get update && apt-get install -y --no-install-recommends \
     gcc libmupdf-dev libfreetype6-dev libharfbuzz-dev libjpeg62-turbo-dev \
-    libopenjp2-7-dev curl git && rm -rf /var/lib/apt/lists/*
+    libopenjp2-7-dev curl git && rm -rf /var/lib/apt/lists/* && \
+    git config --global init.defaultBranch main
 
 # Copy Ezer Mishpati MCP server source
 COPY mcp-server/pyproject.toml /app/mcp-server/pyproject.toml