diff --git a/Dockerfile b/Dockerfile
index 650ba4c..eb3fcad 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -33,6 +33,9 @@ RUN curl -fsSL https://deb.nodesource.com/setup_22.x | bash - \
 # Install uv via pip
 RUN pip install uv
 
+# Disable reflinks — overlayfs doesn't support them (EAGAIN inside Docker builds)
+ENV UV_LINK_MODE=copy
+
 # Copy backend dependency files and install Python dependencies
 COPY backend/pyproject.toml backend/uv.lock /app/backend/
 WORKDIR /app/backend